Oftentimes when you hear someone describing the process of evolution they will say something like “We evolved from the Animals”. Sort of making it sound as if the whole purpose of evolution was to get to us so that now that we’re here evolution is over!
The Standard image of Human Evolution makes it all seem as if we were the preordained result. This cartoon version of reality ignores that fact that evolution is still an ongoing process. (Credit: Daily Mail)
O’k maybe that’s a bit of an exaggeration but in general we humans don’t think of evolution as something that’s still going on inside of us. Well a new study by Doctor Jaliya Kumaratilake of the University of Adelaide along with Professor Maciej Henneberg and Dr. Teghan Lucas at Flinders University has detailed an anatomic change in the bodies of a large section of the population over the last 150 years. The study, which was published in the ‘Journal of Anatomy’, concerns the arteries that supply blood to our forearms.
The Human Arterial System supplies both oxygen and food to all of the cells of our body. (Credit: ThoughtCo)
Let me back up a bit and explain. You see when our forearms first begin to develop as a fetus in our mother’s womb they are each supplied with blood by a single artery known as the median artery. As our forearms become more fully developed two other arteries grow, one on each side of the median artery known as the radial and ulnar arteries and as those arteries mature the median artery disappears, in most people.
A most mature adults the only two arteries in the forearm are the Radial and Ulnar. The Median artery has disappeared. (Credit: Pinterest)
In fact when Kumaratilake, Henneberg and Lucas examined autopsies and other records dating from the 1880s they found that back then approximately only 10% of adults still possessed their median artery. Going forward in time the researchers found that the percentage of adults who kept their median artery increased until at present over 30% of the population now has three functioning arteries in each forearm.
An increasing number of Adults however are retaining their median artery from the womb. Is this a sign a that evolution isn’t finished with us yet? (Credit: Robert Haladaj et al in the Medical Science Monitor)
That’s
a significant evolutionary shift in a population for such a short period of
time. According to Doctor Lucas, “If this trend continues, a majority of
people will have median artery of the forearm by 2100.” Professor
Henneberg meanwhile points out the benefits of having a third artery in
increasing blood flow to the arm.
The median artery is actually not the only evolutionary change that medical professionals have noticed taking place in the human body. One that may surprise you is a reduction in the number of people suffering from impacted wisdom teeth.
Wisdom teeth are the last of our teeth to develop and erupt, often in our 20s. (Credit: WebMD)
Wisdom teeth, or technically third molars are the last teeth to appear in the human mouth, typically erupting somewhere during the late teens to early twenties. It is the opinion of most evolutionary biologists that our ancestors developed the third molar in order to help deal with the rougher, courser food in their diet.
A wisdom tooth that fails to develop properly can cause a great deal of trouble, and pain! (Credit: Summit Dental Center)
Whether because of a lack of space or because the third molar comes in sideways wisdom teeth often butt up against the second molar, technically known as being impacted. Such impacted molars can lead to tooth decay and cause a great deal of pain. Because of these problems third molars are often removed by oral surgery.
Over the last 50 or so years however dentists and dental hygienists have noticed a small but still noticeable decline in the number of people having wisdom teeth at all. I for one never had them. This is considered to be another sign of continuing evolution in the human body. In fact geneticists have even identified two genes, PAX9 and MSX1 that pay a role in whether or not a person develops those pesky third molars.
Our early ancestor diet was courser and needed more grinding by our teeth. That’s why they evolved wisdom teeth. (Credit: Genetic Literacy Project)
Interesting thing is, until about 300 years ago while more people may have had wisdom teeth very few suffered from them. It’s our modern diet of soft sugary foods that made wisdom teeth a problem in the first place and so it may be that natural selection is actually reacting to a problem that we ourselves have caused!
Our modern diet requires less chewing so that now wisdom teeth can become more of a problem than an asset. (Credit:Science Alert)
Time
never stands still, and evolution is simply the changes that occur to living
creatures as the conditions in which they live change. It’s not surprising
therefore that evolution hasn’t finished with us yet!
Just
a couple of weeks ago, 14 October, I published a post discussing the winners of
the 2020 Nobel prizes in the sciences. While I covered the recipients of the
physiology, physics and chemistry awards I purposefully skipped the winners of
the Nobel for economics.
You see Paul Milgrom and Robert Wilson, both of Stanford University in California, were recognized by the Nobel committee for their work in the branch of mathematics known as Game Theory and I was planning to write a post about game theory. I decided therefore to wait and include Professors Milgrom and Wilson in this post.
The Economics prize was not actually a part of Alfred Nobel’s will but initiated by the Sveriges Riksbank in Norway in memory of Nobel. This year’s recipients are Paul Milgrom and Robert Wilson. (Credit: Business Standard)
Now we all have played games in our lives, and we know that most of those games involve some degree of chance or luck, various outcomes each have there own probability of occurring. But game theory is not probability theory, although there is certainly some overlap.
Games of chance like Roulette are certainly games but there’s a lot more to Game Theory than just the laws of Probably. (Credit: The Conversation)
As an example, in a game of poker probability theory can tell you exactly what your chances are of filling an inside straight. Game theory on the other hand will help you decide whether or not trying to fill an inside straight is a good strategy to win the game. In other words game theory is about making decisions. Not just in contests but also in everyday life by treating our interactions with each other as games that we are trying to win. The two main assumptions in game theory are that the decision makers, unsurprising known as players, are rational, that they want to maximize the benefit to them, and that they understand the game they are playing enough to make competent decisions.
Winning at Poker, like winning at life, requires more than just winning individual hands. You need to develop a long term strategy for the entire game. (Credit: Liveabout)
One
of the best-known and most often discussed problems in game theory is known as
The Prisoner’s Dilemma. This game is often described as having two men who have
committed a crime of some sort, been captured by the police and separated. The
separation is important in order to keep they two players from acting in
concert.
The police have some evidence against the two prisoners but not a lot so they would like to get one of the crooks to confess and rat on his buddy. So the police separately offer each crook a deal for a light sentence if he’ll cooperate. The other crook would then get a full sentence.
The best outcome of the Prisoner’s Dilemma is if both crooks keep silent, but if your accomplish betrays you you’re screwed. So, do you trust him???? (Credit: Britannica)
If
both criminals refuse to cooperate there’s a fair chance that they could both
go free but there’s a 100% chance of a light sentence for betraying the other
guy. And remember the prisoners are separated so they have no idea what their
cohort will do. Trust is a hard thing to do if you’re afraid that the other guy
could be selling you out!
This kind of situation actually crops up all the time in real life, basically anytime two people have to trust each other in order to maximize their shared gain. Whether it be some form of commerce between two individuals or anything up to two nations forming an alliance in war the prisoner’s dilemma plays a large part and history has shown that whenever things start to go wrong the most often chosen solution is to stab the other guy in the back! In fact the prisoner’s dilemma has been used to explain why so many different kinds of animal become instantly hostile when confronted by another member of their species. Yes game theory has its uses in evolutional theory too.
The Prisoner’s Dilemma has many applications in real life as well. (Credit: Pinterest)
At least betrayal is the best solution to a single prisoner’s dilemma game. You see game theory also has to consider the possibility of multiple prisoner’s dilemma games between the same two players, such as in international trade which can go on for centuries. In such circumstances it can be shown that after just a few games the benefits of trust quickly outweigh the risk.
The Most Possible case is for each Player to mix ‘Defect’ and ‘Cooperate’, sounds like normal life to me! (Credit: SlidePlayer)
Almost
any sort of human interaction can be modeled as a game and therefore subject to
analysis by game theory. All that is required is that the individuals involved
are making rational decisions based on their knowledge of the situation.
One of the most important concepts in game theory is known as a Nash Equilibrium, named for Nobel Prize winner John Nash who was the subject of the 2001 movie ‘A Beautiful Mind’. In the prisoner’s dilemma game discussed above the Nash equilibrium is for both of the crooks to confess.
Mathematician John Nash was a pioneer in the field of Game Theory. (Credit: Scientific American)
Another easy example is sometimes known as ‘The Battle of the Sexes’ and involves a couple who are going out on a date. Now say the man wants to go to a sporting event while the woman wants to go to a concert, but since this is a date the important thing is that they go together. The Nash equilibrium in the case is that they both either attend the sporting event or the concert. As you can see game theory is really about using logic rather than branches of mathematics like calculus or trigonometry.
Another game similar to the Battle of the Sexes is the Chicken Game. In this game mutual disagreement leads to a disaster. (Credit: Slideshare)
Now game theory is not without its problems. You’ll recall I said above one of the main assumptions is that the players are rational. Well experimental psychologists have long criticized that assumption. Another common criticism is that game theory fails to take in account the fact that some players are better at the game than others, that some of us are talented.
Babe Ruth was successful simply because he had Talent. Talent is something Game Theory has difficulty incorporating into its structure. (Credit: SB Nation)
The Hawk Dove Game successfully models the costs and benefits of both survival strategies. (Credit: Triton World)
Nevertheless game theory has become an important tool in evolutionary studies, political science and especially economics. Which brings us back to professors Milgrom and Wilson whose work in game theory involved developing methods for analyzing auctions. In particular they developed formats for certain auctions where the interest of the auctioneer is to benefit everybody, i.e. society, rather than just maximizing their own profit.
Auctions are a common technique for a buyer to receive the highest price for their commodity. (Credit: Artsy)
The
auction formats developed by Milgrom and Wilson were put into practice by the
US government in 1994 when the Federal Communications Commission (FCC)
auctioned off certain radio frequencies for use in the first cell phones!
Unlike much of game theory the work of Milgrom and Wilson has already found
considerable practical applications.
Still
game theory is one of the newest branches of mathematics, and is rapidly
growing. I expect that more Nobel prizes are in the future for game theory.
Rarely throughout our nation’s history has science become an issue that could sway voters in their choice for president or other elected office. There was in fact a time, not too long ago that support for science had a wide bipartisan appeal. Oh, there were occasional debates over the total price tag for individual scientific projects but in general both Republicans and Democrats recognized the importance of scientific research both for growing our economy and for America’s standing in the world. How naïve and innocent those days now seem.
There was a time when ‘Big Science’ was one thing both parties in the US agreed upon. Science was considered a key component in both the economy and defense. (Credit: SlidePlayer)
In today’s America, whether it be evolution or environmental issues or now even how to fight the Covid-19 pandemic, science and empirical thought in general have become politicized to a degree unknown in American history. In its efforts to energize its base, and please its billionaire masters the Republican Party has gone to considerable lengths to confuse and undermine public confidence in basic scientific knowledge.
In their efforts to corner the evangelical vote republicans began to question if not try to discredit basic scientific research. (Credit: Teitter)And in their desire to keep the fossil fuel industry funding their campaigns the republicans have turned a blind eye toward the poisoning of our planet. (Credit: Star Tribune)
The election of Donald Trump sent this ‘war on science’ into overdrive. A habitual liar by nature Trump has unquestionably spent more of his time attacking the facts that have been gathered by the governmental agencies it is his job to manage than he has attacking America’s foreign enemies.
On a number of vital issues Trump has taken Putin’s word against the work of the US intelligence agencies. (Credit: Madison.com)
Indeed Trump has interfered on numerous occasions with government scientists trying to do their jobs. Perhaps the most egregious incident came in 2019 when in a tweet Trump erroneously added Alabama to an official National Hurricane Center list of states at risk from hurricane Dorian which was approaching the US. Rather than simply admitting to having made a tiny mistake Trump insisted that he was right, going so far as to personally, and ineptly, alter and falsify an official hurricane projection map with a black sharpie marker.
Trump displays the hurricane forecast map that he himself had clumsily altered rather than admit that he had made a minor mistake. (Credit: The Guardian)
Such disdain for the truth is more than simply dishonest, it is extremely dangerous. We all know that making the right decision depends on facing the facts and accepting reality. This is true in our own private lives as it is in government. The whole purpose of government scientists and data taking bureaucrats is to provide the facts to our elected leaders. It is risky enough when those leaders choose to ignore the facts presented to them but when they attempt to portray their own prejudices as facts it is a recipe for disaster.
In fact the Trump administration’s response to the Covid-19 pandemic is an excellent example of what can happen when a government replaces facts with lies and reality with delusion. The false statements that Donald Trump has made about Cov-19 are well documented. From “like a miracle it will just go away,” to “we’re turning a corner” it’s just been one lie after another. All while more than 220,000 Americans have died.
Trump’s only actual efforts concerning Covid-19 have been to lie and lie and lie. (Credit: CNN.com)
Now we face the distinct possibility that Donald Trump may overrule the Food And Drug administration’s scientists and release a vaccine before it has completed testing. The consequences of such a bulldozing of scientific and medical norms could destroy all trust in the safety and efficacy of, not only of any vaccine for Covid-19 but for vaccines in general.
Trump’s push to get a Covid-19 vaccine has many people concerned that important safety procedures will be bypassed. (Credit: ABC News)
I had only just begun to compose this post when the news broke of President Donald Trump’s own diagnosis for Covid-19. The irony of how Trump, who had downplayed, denied, ignored and even told boldfaced lies about the pandemic’s deadly spread throughout the US has become a victim of his own reckless and irresponsibility behavior is certainly historic. It certainly says a great deal about how Trump always places his own personal desires above, not just the health and welfare of others but literally above everything else including his own health.
Despite having contracted Covid-19 himself Trump continues to hold massive rallies that risk the health of everyone and anyone who attends. (Credit: The DesMoines Register)
And
the consequences of that irresponsibility to not only Trump himself but to his
supporters are becoming clear as every hour another campaign official, senior
White House advisor or GOP member of Congress tests positive for Covid-19. Add
to that the question of whether Trump knew that he was positive when he
attended fundraisers in Minnesota and New Jersey, potentially putting the
health of those he came in contact with at risk and the President’s reckless
behavior verges on the criminal. All of this demonstrates exactly how dangerous
Donald Trump’s arrogant ignorance and determination to force his will onto the
facts presented to him by scientists, doctors and other experts is to the
future of our country.
The attitude of Joe Biden, the democratic candidate for President, to science and basic knowledge in general serves as a stark contrast to that of Donald Trump. Throughout his years in congress the former Vice-President had always shown the greatest respect for scientific fact and the opinions of experts. Whether it be the dangers of pollution and climate change or the attempted interference in our elections by foreign powers Biden has always sought for and based his decisions on the best evidence available from those whose job it is to gather that evidence. A Biden administration will be one that at the very least tries to do the right thing to solve the problems of this country instead of simply lying its way through those problems.
Joe Biden’s responsible behavior, such as wearing a mask to slow the spread of Covid-19, stands in stark contrast to his rival’s dangerous nature. (Credit: Forbes)
During all of those years in congress Biden has been at the forefront of the fight for stricter environmental rules to control all forms of pollution. Then, as Vice-President under Barack Obama, Biden worked on many sustainable energy projects and other ‘green’ initiatives. As President Biden can be expected to continue the work of trying to clean up the environment as well as simply returning science to its proper place as a guide toward the future of our nation.
As Vice-President Joe Biden took the lead in efforts to solve environmental problems, especially Climate Change. (Credit: Joe Biden for President)
The choice this year is so clear, so indisputable that scientific organizations and publications who have for many years strictly avoided taking any sides in any political debate have in this election decided that they cannot remain silent. Scientific American magazine, which had never in its 175-year history endorsed a political candidate, has endorsed Joe Biden for President, accusing Donald Trump of dismissing science. At the same time the 208-year-old New England Journal of Medicine recently published its first ever editorial dealing with politics referring to the Trump Administration’s response to Covid-19 as “Dangerously Incompetent” and calling for voters to remove him from office. The fact that these two apolitical institutes should reverse centuries of tradition in order to voice their opposition to another four years of Donald Trump is telling.
Scientists in general try to keep their political views private but this election has forced the scientific community to come out in strong support for Joe Biden. (Credit: Daily Mail)
One recent episode illustrates very succinctly the difference between Trump’s and Biden’s attitudes toward science. At a rally in Nevada on the 18th of October Donald Trump actually accused his rival of ‘Listening to the Scientists”. The democratic nominee quickly replied with the one word answer of “Yes!!”
Donald Trump in the act of accusing Joe Biden of ‘Listening to Scientists’. (Credit: Snopes.com)
The
word science is just Latin for knowledge, truth. The question in this election
is simply this, is the United States to be governed by a man who at least
respects the truth, or by someone to whom lying is a lifelong habit?
There’s quite a wide variety of news items happening that deal with space to talk about this month. Both manned and unmanned programs are involved. I think I’ll start with the news of Earth’s second Moon. You heard me right, Earth’s second Moon.
Our planet has only one large Moon which we have christened ‘The Moon’! (Credit: The Fayetteville Observer)
Over the last decade or so astronomers have been finding quite a few space rocks, very small asteroids orbiting the Sun in an orbit that brings them close to that of our Earth’s. These objects are collectively known as ‘Near Earth Objects’ or NEOs and some may actually pose a threat of striking the Earth in the coming decades.
In 2018 the small space rock 2018 VP1 came close to our Earth twice! 2018 VP1 is classified as a Near Earth Object or NEO. (Credit: Orlando Sentinel)
It’s
also possible that on occasion one of these space rocks may get captured by the
Earth’s gravitational field and become a ‘mini-Moon’, at least for a few months
or years. This happened back in 2006 and 2007 when the NEO named 2006 RH120 was
briefly captured and again from 2018 to 2020 with 2020 CD3.
Now it looks as if Earth is about to gain another mini-Moon for a while as the object 2020 SO is on an incoming trajectory. Between now and next March 2020 SO will make two loops around the Earth before heading back out into interplanetary space. Click on the link following to be taken to YouTube video of 2020 SO’s orbit. https://www.youtube.com/watch?v=sxPYh1s8KB4
And
2020 SO appears to be an oddball for yet another reason. You see 2020 SO’s
orbit around the Sun is the closest match to Earth’s of any object yet
discovered and that made astronomers suspicious. Checking the object’s orbit
backward in time they think they’ve figured out just what 2020 SO really is.
It seems that 2020 SO is probably man made! NASA now believes that 2020 SO is actually the Centaur stage of the rocket that sent the Lunar lander Surveyor 2 to the Moon back in September 1966. If true that would mean that 2020 SO has been just floating around out there for more than 50 years.
An upper stage Centaur booster about to be loaded onto an Atlas rocket. The Centaur is a commonly used booster for sending space probes beyond Earth Orbit. (Credit: Spaceflight Now)
The Surveyor 3 space probe on the Moon’s surface as photographed by the crew of Apollo 12. Surveyor 2 crash landed on the Moon but it’s Centaur booster went past the Moon into interplanetary space. (Credit: NASA)
It makes sense if you think about it. By now humanity has sent close to a hundred space vehicles beyond Earth orbit into interplanetary space. Every one of those vehicles had to be accelerated to escape velocity by means of a booster rocket and those boosters didn’t just vanish after they had completed their task. They’re all still on an orbit around the Sun that occasionally intersects that of Earth’s.
The largest of these boosters would be the nine S-IVB stages that sent the Apollo astronauts to the Moon. They’re all still out there and now it seems that one of them is coming home for a brief stopover. As astronomers get better at keeping track of NEOs I daresay that we’ll be seeing a lot more visits from our long lost offspring.
The S-VIB stage of Apollo 8 photographed by Apollo 8 between the Earth and Moon. There are 9 such rocket stages floating somewhere near our Earth! (Credit: CollectSpace)
In other news, aerospace giant Boeing has suffered another problem in its efforts to launch the corporation’s Starliner commercial crew vehicle. After last year’s Unmanned Test Flight (UTF) of Starliner that was plagued by numerous software problems Boeing has been working full blast to correct the issues so that a second UTF can been carried out before this year is over, something that looks ever more doubtful. Even if a successful UTF can be accomplished this year the first Crewed Test Flight (CTF) in NASA terminology of Starliner will come no earlier that the middle of 2021.
Boeing’s Starliner manned space capsule has yet to carry anyone. Maybe next year. (Credit: Wikipedia)
And now it’s been announced that that first manned mission will have to be with a new commander. Christopher Ferguson, the commander of the final flight of the space shuttle, had been assigned as CTF commander back in August of 2018. Now however the veteran astronaut is stepping down from the mission in order to spend more time with his family.
Veteran Astronaut was scheduled to be mission commander of the first manned flight of Starliner, technically the Crewed Test Flight (CTF). Now however he has stepped back from his assignment for personal reasons. (Credit: SoundCloud)
Starliner’s
new commander will be NASA astronaut Barry Wilmore. Meanwhile Ferguson, who is
an executive at Boeing, will remain involved with the program but such a major
change in personnel is just one more complication for Starliner.
Meanwhile Boeing’s competitor Space X is also having a few difficulties of its own. An October 2nd unmanned launch of a Space X Falcon 9 rocket was halted just 2 seconds before liftoff because of what has been described as an anomalous rise in pressure in one of the nine Marlin engine’s turbomachinery gas generator.
Static test firing of a Space X Merlin rocket engine. A recent Space X launch was aborted two seconds before launch due to excessive pressure in an engine’s gas generator. (Credit: Wikipedia)
That scrubbed flight has prompted NASA to delay the next Space X manned mission to the ISS, previously scheduled for the 31st of October. That mission, officially designated as Crew-1 Mission because it is actually the first mission in Space X’s contract to deliver NASA astronauts to the ISS, has now been officially pushed back to early to mid November. The extra time is to allow Space X to carry out a through investigation into what happened in the Oct 2nd launch attempt.
The crew of Space X’s Crew Mission 1 flight training for their mission. (Credit: NASA Blogs)
Hopefully
Space X will quickly identify the cause of the problem so that NASA’s
commercial crew program can finally get unto some kind of a regular schedule.
The whole idea of having two commercial carriers was so that if one had a small
problem, like Space X’s engine issue, the other could take up the slack.
Because of Boeing’s major and continuing difficulties however even small
problems at Space X can become major headaches.
Finally, we do have one scheduled space event to look forward to during the rest of this month. On October 20th the Osiris-REX space probe, which has been in orbit around the asteroid Bennu for almost two years will descend down to the rocky surface in an attempt to collect a sample of the asteroid’s material.
Artists impression of Osiris-REX reaching out to grab a little piece of the asteroid Bennu. (Credit: FIS Technology)
This
will be the first of potentially three touchdown sampling attempts, each
landing lasting for no more than 5-10 seconds. During the few seconds of
contact Osiris-REX’s robotic arm will reach out and suck in as much as 50-60
grams of dust and other material. The material collected will then be stored in
a nitrogen bottle. Since Osiris-REX has three such bottles there can be a
maximum of three collecting attempts.
The site chosen for Osiris-REX to make its first attempt is a small crater named Nightingale which was chosen because, based on observations over the last two years the material there is considered to be ‘fresh’, that is uncontaminated by the solar wind. At the same time there is a small area, only the size of two or three parking spots that is flat and boulder free for the landing.
A silhouette of Osiris-REX against its chosen landing area on Bennu. Not a lot of room to maneuver. (Credit: Kids News)
And Osiris-REX will have to carry out the landing all on its own because at a distance of about 330 million kilometers the time it takes a radio signal to go from the probe to ground control is about 18.5 minutes. That time delay means that any last minute adjustments to Osiris-REX’s course will have to be made by the probe itself.
Osiris-REX is scheduled to leave the asteroid Bennu next March to begin a return journey that will bring its collected samples back to Earth on September 24, 2023.
P.S. Since I wrote this post Osiris-REX has successfully carried out its first touch down and NASA’s scientists are now trying to evaluate how much material was gathered.
If you think about it, over the last four hundred years humanity’s growing science and technology has given us an enormous amount of control over many aspects of nature. The speed and distance we can travel has steadily increased, as has both the size and number of structures we can build. We grow more food than ever and whether we like it or not we are even changing the weather. Can you say climate change! We have discovered the very code of life itself and begun to understand how to alter and mold living things to suit our desires. We now have many ways of controlling space and material objects that would seem like magic to our ancestors of a thousand or more years ago.
Thanks to our control over Nature we have been able to build ourselves a world completely unlike anything in Nature. (Credit: Invisiverse)
But we still have virtually no control over time. Oh, we can measure it’s passing with an accuracy that, at the risk of repeating myself, is almost magical. We can’t stop time of however, and although Einstein’s two theories of Relativity do describe how the passage of time can be slowed that slowing requires either velocities approaching the speed of light or immense gravitational fields such as those around black holes.
A modern Atomic Clock is accurate to something like one second in a billion years. Scientists can use that precision to make measurements of phenomenon that last only a billionth of a second. (Credit: WatchPro USA)
And
even theoretically we can’t go backward in time. In fact many scientists have steadfastly
maintained that time travel to the past is logically impossible because of
something known as the grandfather paradox.
What is the grandfather paradox? Well it works like this. What if you were to travel backward in time and murder your grandfather before he fathered your own father? In that case you would never have been born and if you were never born how could you go backward in time to kill someone?
In the Grandfather Paradox the very existence of a Time Machine leads to a Logical Absurdity. (Credit: YouTube)
This idea of the dire consequences to the present of doing anything in the past has been the central idea in many Science Fiction stories like Ray Bradbury’s ‘The Sound of Thunder’ as well as movies such as ‘Back to the Future’. Many scientists feel that the logic of the grandfather paradox is so tight that traveling into the past is simply a pipe dream better left to science fiction writers.
In Ray Bradbury’s ‘The Sound of Thunder’ hunters travel into the past to hunt a T Rex. Despite their best efforts they change the past, changing their present! (Credit: Deviant Art)In ‘Back to the Future’ the same idea is used for humour as Marty has to repair the damage he’s done to the past or he’s a goner! (Credit: Universal Pictures)
Still theoretical physicists and mathematicians looking for solutions to Einstein’s field equations occasionally came up with equations that, while physically hard to interpret seemed to include the possibility of going backward in time. Collectively these solutions are known as ‘Closed Timelike Curves’ or CTCs and where initially discovered back in 1937 by Jacob van Stockum and later extended by Kurt Gödel in 1949. Basically a CTC describes the movement of a material particle that loops endlessly through time and space in a circle. This would imply that the existence of a particle following a CTC would be extremely limited in both time and space.
Every observer exist at a single point in space-time. Since nothing in the Universe can move faster than the speed of light that observer can only be effected by events within his Past Light Cone while he can only effect events with his Future Light Cone. (Credit: Wiktionary)Under Certain conditions however, such as near a black hole, a light cone can be tilted. Continuous tilting results in a Closed Timelike Curve. (Credit: SlideShare)
Physically it is hard to understand how any particle following a CTC could interact with other more normal particles. Such a path in Space-Time would seem to imply the possibility of events happening without causes since to the normal particle the CTC particle can appear to pop into existence without reason. At the same time to an outside observer a particle inside a CTC might appear to experience an event before its cause!
Because
of such paradoxes many physicists expect, or perhaps hope that an eventual
unified theory of gravity with quantum mechanics might eliminate CTCs as even
being mathematically possible. Other physicists however prefer to try to make
sense of these weird solutions to the field equations.
One of those physicists is Germain Tobar, a student at the School of Mathematics and Physics at the University of Queensland in Australia. With the assistance of his colleague Dr. Fabio Costa, Tobar has analyzed CTCs in such a way that he maintains opens up the possibility of time travel into the past.
Germain Tobar (r) with his advisor Dr. Fabio Costa. (Credit: News.Com.au)
But
what about the grandfather paradox? What about the problem of actions in the
past changing the present? Well in Tobar’s analysis what happens if you were to
try to change the past then the universe would react so as to avoid the
paradox, to repair the damage you have caused in other words.
I won’t go into the math. (Actually I am going through the Math, trying to remember what I learned in my course in General Relativity but I won’t impose it on you.) However, it appears to me that in Tobar’s treatment if you were to go into the past and kill your grandfather then when you returned to your present you would find yourself with a different grandfather or something equivalent. Sounds to me kind of like what Marty and Doctor Brown did to repair things in ‘Back to the Future’ except that this repairing would occur naturally, automatically.
I have to admit I have real problems with that idea. Remember, the past starts just an instant ago! What if you were to step into a time machine and go back ten minutes and murder yourself just as you’re stepping into your time machine? I’m sorry but I can’t imagine how the Universe could repair that damage, how it could change things so much so quickly in order to somehow avoid the paradox!
Maybe it would work something like this? (Credit: xkcd)
Time
Travel would be the ultimate power, the ability to undo all of our mistakes, to
right all of the wrongs we’ve done. Perhaps for that very reason it is the one
power that will always elude us.
Early October is always that time of year when we all take a moment from the mundane news to recognize those scientists who are making fundamental contributions to our knowledge of the world around us. The cause of this annual ceremony is of course the announcement of the winners of the Nobel Prizes for the natural sciences of Physics, Chemistry, and Physiology.
The Nobel Prize. Oh, there’s also about a million bucks involved as well. (Credit: Phys.org)
This year the Physiology, i.e. Medicine prize was announced first and has been awarded jointly to Harvey J. Alter, Charles M. Rice, both of the United States, along with British Born Michael Houghton. Fittingly in this year of the Covid-19 pandemic the work for which these three scientists have been recognized deals with the identification of and drug treatments for the deadly viral disease, Hepatitis C.
This Year’s prize winners for Medicine are (left to right) Harvey J. Alter, Michael Houghton and Charles M. Rice. (Credit: Firstpost)
Hepatitis in general is classified as an inflammation of the liver and is most commonly caused by one of five different viruses giving rise to Hepatitis A, B, C, D and E. Of these Hepatitis A and B were the first to be studied and vaccines are now available to provide immunity against those forms of the disease. The cause of Hepatitis C however remained elusive for many years, making the search for effective means of treatment difficult.
Hepatitis is really several diseases that all cause an inflammation of the liver. Hepatitis is a very serious disease that if left untreated often results in death. (Credit: DW)
It
was in the 1960s that Doctor Alter succeeded in demonstrating that Hepatitis C
was in fact a completely different disease from the types known at that time, A
and B. Due to Alter’s work Hepatitis C was for a time actually known as
Hepatitis ‘non-A’, ‘non-B’.
Following up on Alter’s work Doctor Houghton then was able to isolate the genetic structure of a previously unknown virus in Hepatitis patients. Finally it was Doctor Rice who showed that the new virus alone could cause Hepatitis. Once the cause of Hepatitis C was known tests and treatment techniques could be developed for the virus so that today Hepatitis C is a treatable disease.
Like all viruses the Hep C virus is simply a strand of genetic material, RNA in this case, surrounded by a protective shell of proteins and lipids. (Credit: Wikipedia)
The Physics prize came second and was also awarded to a trio of scientists. Sir Roger Penrose of Oxford University in the UK received half of the award while Reinhard Genzel of Germany and Andrea Ghez of the United States shared the other half. The three were all honoured for their pioneering work on Black Holes.
The 2020 Nobel Physics recipients are (left to right) Sir Roger Penrose, Reinhard Genzel and Andrea Ghez. (Credit: Hindustan Times)
In fact it was Sir Roger, along with the late Stephen Hawking who were the first physicists to take seriously the idea that the odd solutions to Einstein’s field equations might have a physical reality. (Einstein himself could never made up his mind on whether or not black holes existed.) Penrose and Hawking spent decades mathematically working out the details of what a black hole would look like (pun intended). For much of that time they continued working despite the fact that there was absolutely no observational evidence to confirm any of their theories.
Perhaps the two men most associated with Black Holes. Stephen Hawking (l) and of course Albert Einstein. (Credit: ABC)
In fact much of the first evidence for black holes came from the work of Genzel and Ghez who were investigating the supermassive object at the center of our galaxy known as Sagittarius A. Using some of the world’s largest telescopes Genzel and Ghez developed techniques to see through the clouds of gas in the Milky Way’s center. Those techniques enabled them to study Sagittarius A and demonstrate that it was an immense black hole, confirming many of the theories of Penrose and Hawking. Supermassive black holes like Sagittarius A are now thought to exist at the center of every large galaxy.
In the constellation of Sagittarius lies the center of our Milky Way galaxy. There sits a supermassive black hole millions of times as massive as our Sun. (Credit: NASA)
So
if Sir Roger is now getting a Nobel Prize why isn’t Hawking? The answer to that
question is easy, he’s dead and according to the terms of Alfred Nobel’s will
that set up the Nobel prizes only living persons can receive the award. If you
think that’s not fair, well it really isn’t. However, this is actually not the
first time that a scientist has died before his work was sufficiently confirmed
to be considered for the prize.
Actually I rather doubt that any of this year’s physics recipients would have won their awards if it hadn’t been for last year’s ‘photograph’ of a black hole, see my post of 17 April 2019. That image was the confirmation of many theories about black holes and undoubtedly convinced the Nobel committee that it was time for researchers studying black holes to finally be recognized.
The first ‘photo’ of a Black Hole, actually taken at microwave frequencies. This is the supermassive black hole in M87 and the accretion disk around it. (Credit: NPR)
No such prompting was required in order to choose the recipients of this year’s chemistry prize. Emmanuelle Charpentier of the Max Planck Institute in Berlin and Jennifer A. Doudna were honoured for their work on the gene editing tool CRISPR. See my posts of 5 August 2017, 1 December 2018 and 18 Aug 2019 for discussions of just how enormous a breakthrough CRISPR is.
CRISPR is the most accurate and precise tool yet discovered for the editing of genetic material. (Credit: YouTube)
The
award to Doctors Charpentier and Doudna is unusual for several reasons. One
reason is that the first major papers describing CRISPR were published less
than a decade ago in 2011 and 2012. Nobel prizes are normally awarded for work
that dates back several decades, remember what I said about Roger Penrose and
Stephan Hawking above. This is in order to make certain that a great deal of
conformational evidence has been accumulated supporting the work before the
prize is awarded.
Over
the last half dozen years however CRISPR has proven to be such a marvelous tool
for genetic studies that the evidence of its importance is overwhelming. CRISPR
has given science the most precise and useful tool that it has ever had for
literally changing the code of life itself and we are only at the beginning of
understanding all that it can do.
The other reason that this year’s chemistry prize is notable is because it represents the very first time that two women have shared the prize. It is unfortunately true that the majority of Nobel Prize winners are white men, with a small number of Asian men thrown in.
Like Hypatia of Alexandria Women have often made important contributions to science and mathematics. (Credit: Historic Mysteries)
Personally I want both greater female and minority participation in the sciences because the more scientists we have, whatever their colour or sex, the more discoveries we will get. For that reason I congratulate Doctors Charpentier and Doudna and hope that other women will soon join them in making equally important advances in our understanding of the Universe. Like Doctors Alter, Rice, Houghton, Penrose, Genzel and Ghez, and hey, let’s not forget Hawking, they all deserve our recognition for their work of discovery.
Forty years ago the United States was in the midst of a contentious presidential election. The incumbent Democratic President Jimmy Carter was being challenged by Republican B-grade movie actor turned politician Ronald Reagan.
Even at the time America could sense the political shift that Reagan’s defeat of then President Carter entailed but after 40 years the true extent of the damage is only now becoming clear. (Credit: Snopes.com)
Carter
was widely viewed as a kind and gentle but weak leader who was unable to solve
the country’s many problems. And America had a lot of problems back then. Not
only was the economy sluggish, with low growth and very high interest rates but
thanks to the Vietnam war and the Watergate scandal the average American’s
trust in their government was at an all time low.
Reagan promised a new vision for the country. Government was the problem he asserted. His plan was to lower taxes, especially on the wealthy, and shrink the size of government. With their increased wealth the rich would invest more in the economy he told voters. With all of that new investment the economy would grow at a faster rate than even during prosperous times of the 50s and 60s. The economy would grow so fast he assured us that before long the benefits would ‘Trickle Down’ to everyone so that ‘A rising tide would raise all boats’.
How Trickle Down economics was supposed to work. (Credit: Economics Help)
With his fatherly, show business personality Reagan easily won the 1980 election and proceeded to turn his agenda into policy. Since Reagan’s presidency that mantra of ‘Lower Taxes’ and ‘Shrink the Government’ has been gospel for the Republican Party, an act of faith without any evidence to support it. As the rich get richer, they still promise, the wealth will someday trickle down.
After 40 years how it actually feels like Trickle Down economics works. (Credit: St. Louis Post-Dispatch)
Regulations were another target; they just got in the way of Big Business making America a wealthier nation. Get rid of all of that anti-trust, anti-financial, pro-environment government meddling. The ‘Invisible Hand’ of a ‘Free Market’ would solve all of America’s problems.
Again, how the Invisible Hand is supposed to work. (Credit: Market Business News)
Well over the next forty years the rich certainly got richer, the rest of us are still waiting for the trickle to start. In fact while the real wealth of the top 1% of Americans has quadrupled the wealth of the middle 50% has remained virtually the same and the wealth of the lowest quarter of Americans has actually fallen by about a third.
Since Reagan’s time the Invisible Hand has lifted the wealth of the top 1% by quite a lot. The bottom 50%, not so much! (Credit: Vox)
‘Evil Geniuses, the Unmaking of America, a Recent History’ by journalist Kurt Anderson is the story of how the people of the United States were duped into accepting a flawed, indeed a dangerous economic plan. It’s the story of how in the 60s a few ultra-conservative, New Deal hating politicians and economists began to build a movement that in the 80s not only dominated the Republican Party but received the tacit consent of many Democrats.
Cover of ‘Evil Geniuses’ by Kurt Anderson. (Credit: Amazon)
Author and Journalist Kurt Anderson. (Credit: The Village Vioce)
But the conservative movement in the US was about more than just the economy. The ‘Free Market’ conservatives not only co-opted the support of the ‘Moral Majority’ religious right but even bargained with the racist, anti-immigrant hate mongers in America for their support. This latter accommodation with the old white supremacists was started by none other than Richard Nixon as his ‘Southern Strategy’.
Senator Strom Thurmond was one of many segregationist Democrats who switched to the Republican party in opposition to the civil rights movement of the 1960s. (Credit: Simple Wikipedia)
In ‘Evil Geniuses’ Kurt Anderson gives you all of the details of that monumental con game and even more importantly makes all of the connections. You’ll discover how the Koch brothers and other millionaires used their huge fortunes to fund conservative think tanks and endow university professorships with the sole intention of providing intellectual justification for their wholesale theft of the wealth of America. You’ll learn about how Roger Ailes, before creating the ‘fair and balanced’ FOX News was executive producer for Russ Limbaugh. Together the two demonstrated how to turn anger and hatred into entertainment, politics as show business laying out the path that would eventually lead to the ultimate hate monger Donald Trump.
Roger Alies (l) helped create right wing hate media with Rush Limbaugh (r). Today it has devolved into Breitbart, One America Network and even such underground conspiracies as Qanon. (Credit: YouTube)
There are far too many details to mention here, too many connections between the principal players; you’ll just have to read “Evil Geniuses’ to get the whole story. As Kurt Anderson himself says several times the story reads almost like a conspiracy theory except that, with the exception of a few individuals like the Koch brothers, all of the conspiring was done in public, there was virtually no attempt made to hide anything. Several times Mister Anderson points to the character of Gordon Gekko in the movie ‘Wall Street’ claiming that ‘Greed is Good’ as an example of the brazen economic immorality that has dominated right wing politics for the last 40 years.
Actor Michael Douglas as Wall Street executive Gordon Gekko. The unfortunate thing is that there are literally thousands of ‘businessmen’ who look upon Gekko as a role model.
I
do have a few small criticisms of ‘Evil Geniuses’ however. For one thing Mister
Anderson needs to learn how to present data in either graph or table form.
Throughout ‘Evil Geniuses’ we are giving a good deal of statistics about GDP or
unemployment or income inequality exclusively in prose form, not the easiest
way to absorb a large number of facts. I know that Mister Anderson is a
magazine writer and editor not a scientist, but he must know some science
journalists who could give him a few pointers on how to use graphs and tables.
Let me give one example. Anderson discusses a survey where people in the US are shown pie charts illustrating the wealth breakdown in two countries, i.e. how much the top 1% own, the next 10% own on down to the people at the bottom. The people surveyed aren’t told which countries are represented, they are in fact the US and Sweden, and are asked, based on the information from the graphs only, which country they would rather live in. Of course more than 90% chose Sweden. Well I think that the point could have been made more effectively if the pie graphs themselves had been shown! If Anderson had access to the survey’s results he could have gotten access to the pie graphs and just shown them! Really, in my opinion a dozen or so graphs or tables would have greatly improved the punch of ‘Evil Geniuses’.
See how much better it is to show data rather than try to talk about it! A picture is worth a thousand words after all. (Credit: Morningside Center for Teaching Social Responsibility)
Other than that I give my highest approval to
‘Evil Geniuses’ by Kurt Anderson. It is without doubt an important and well
researched book in these trying times for our country. In addition to being
important however it also succeeds in being an absorbing, enjoyable book, a
combination not at all easy to accomplish.
“Lovecraft Country’ is a new series on HBO from executive producers Misha Green and J. J. Abrams. Based on a novel by Matt Ruff ‘Lovecraft Country’ is a chronicle of the adventures of a young black couple Atticus Freeman, played by actor Jonathan Majors, and Leticia Lewis, played by Jurnee Smollet-Bell. Taking place in the 1950s in ‘Lovecraft Country’ Atticus and Leticia, along with their relatives and friends must not only endure the prevalent racism of the time but also survive the machinations of a secret occult society of rich white people.
Official HBO poster for Lovecraft Country starring Jonathan Majors and Jurnee Smollet-Bell.(Credit: HBO)
Now
let’s be honest right from the start. As an old, college educated white man I
have had little personal experience of what it’s like to be discriminated
against. (And by little in the instance I mean none!) I have, in my life and
career known a wide diversity of different people and I hope that I have
treated them based upon what kind of person they are rather than the group to
which they belong. I had thought, just a few years ago that as a society we
were making progress toward racial equality but lately it has become painfully
obvious that bigotry runs deep in this country, and will take many more years
to eliminate, if indeed we ever do.
And that’s one of the interesting aspects of ‘Lovecraft Country’. By illustrating some of the mechanics of historic Jim Crow racism such as ‘Sundown Towns’ (no blacks allowed after sundown) and tour guides for blacks (listing restaurants, motels and other establishments in cities and towns that serve blacks and are ‘safe’ to go to) you can acquire some feeling for what it was like to be black in a segregated America.
Atticus (l) with his Uncle George who publishes a ‘Travel Guide for Negros. There really were such guides back in Jim Crow America. (Credit: Insider)
But of course ‘Lovecraft Country’ is a supernatural horror show and quite a good one, with some familiar monsters such as ghosts and vampires being used in very unusual ways as well as some completely new otherworldly creatures. Despite the title ‘Lovecraft Country’ makes no use of H. P. Lovecraft’s ‘Olde Ones’ such as Yog-Sothoth or Nyarlathotep although Cthulhu does make a very brief appearance in a dream sequence right at the very beginning of episode one. Incidentally Cthulhu gets beaten up by Jackie Robinson with a baseball bat, something I admit I could never have imagined.
Jackie Robinson about to beat on Cthulhu in a dream at the beginning of ‘Lovecraft Country’. (Credit: HBO)
The important difference however is that in a Lovecraft story the humans in contact with or worshipping the daemons and monsters are ‘men of a very low, mixed blooded, and mentally aberrant type’. The quote is from Lovecraft’s story the ‘The Call of Cthulhu’ and is just one example of the way that Lovecraft usually described minorities.
Waiting ever in the shadows, Cthulhu is a symbol of our fear of the unknown. (Credit: Mod DB)
In ‘Lovecraft Country’ on the other hand most of the wizards are rich white people. This is in fact a deliberate twisting of the racism in Lovecraft’s own works and when combined with the normal, mundane bigotry of the 1950s does succeed in making young, attractive, well dressed, rich white people seem like monsters. And remember this is an old white guy talking!
In Lovecraft Country a secret cabal of rich white men are wizards pursuing Atticus because, despite being black he is the last direct descendant of their founder! (Credit: HBO Watch)
Another
difference between Lovecraft’s stories and ‘Lovecraft Country’ is sex. There’s
quite a bit of hanky panky going on in ‘Lovecraft Country’, most of it
pertinent to the storyline. On the other hand it would be hard to have less sex
than there is in Lovecraft’s works.
Technically “Lovecraft Country’ is very well made, the special effects are quite good, at times even chilling. The performances of the actors are also engaging, especially that of Majors and Smollet-Bell. Several of the ‘minor characters’ have also been given storylines of their own in addition to their parts in the main story of Atticus and Leticia.
One of the monsters in ‘Lovecraft Country’ is the Shoggoth. Although different from Lovecraft’s Shoggoths it is still a fearsome creature. (Credit: The New York Times)
I’ve
just finished watching episode seven of ‘Lovecraft Country’ out of a total of
ten so there are three episodes left to the series. If you haven’t started
watching it yet don’t worry, this is HBO so I’m certain that they’ll be
rebroadcasting the entire series before long. If you’re the type who enjoys a
good supernatural horror story you should certainly check it out.
But before I go I would like to take a few minutes to discuss what kind of writer H.P. Lovecraft was. Did he write Science Fiction or Fantasy or Horror or what? Of course you could just say that Lovecraft, like most storytellers wrote whatever he felt like, mixing all three categories as necessary in order to tell his tale.
Howard Phillips Lovecraft. He looks more like an accountant than the genius who imagined countless worlds beyond our own! (Credit: Reddit)
That’s a bit of a cop out however. I think the best way to understand Lovecraft writings are to recognize that they all deal with the strange, the unfamiliar, the alien. Lovecraft never could have written the kind of stories and novels that a Jane Austin or Ernst Hemingway or others like them wrote. Writing stories about a couple who fall in love or a man who faces up to his fears…how boring, how pedestrian, give me a tentacled monstrosity from beyond the stars!
Another member of ‘ye Great Old Ones’ is Yog Sothoth, a formless mass of malevolence. (Credit: StarfinderWiki)
And
Lovecraft’s fixation on that which is different is almost certainly connected
with his streak of racism, literally treating someone, or something unfairly
and unjustly because you perceive them as alien. Throughout his works Lovecraft
often uses the same negative, pejorative adjectives to describe his
extraterrestrial god-daemons as he does to describe non-white humans.
Psychologically it is called xenophobia, a neurotic fear of anything that is
different.
Living in what was a pretty racist period in history Lovecraft’s xenophobia paradoxically not only fueled his vivid imagination but also twisted it into something that at times became morbid and sub-human. I freely admit that I love the way Lovecraft could describe a Universe that is both larger and more diverse than most writers, most people could ever imagine. However I also recognize that Lovecraft used the immenseness of the Universe as a source of fear and loathing, not the place of wonder and beauty that I see in all of its diversity.
But if we are to call ourselves rational creatures shouldn’t we be able to control our fears and learn to appreciate everything the Universe has to offer? (Credit: Notable Quotes)
‘Lovecraft Country’ has something of that same attitude; basically just that the Universe is a big scary place and we human beings should be afraid of it. Personally I may enjoy stories built on that sort of framework, as I enjoy ‘Lovecraft Country’. In the long run however, I do prefer those Science Fiction stories that have a more hopeful view of the Universe and our future in it.
So what should we do with H. P. Lovecraft? Should we follow the advice of Shakespeare’s Mark Anthony when he says “The evil that men do live after them, the good it oft interred with their bones, so let it be with Lovecraft?” Remember Shakespeare himself said quite a few racist things. Do we throw away everything Lovecraft ever did? Do we censor the past in a vain effort to clean it up so that it cannot offend our modern sensibilities?
Intended to be anti-racist, ‘The Adventures of Huckleberry Finn’ are now considered to be rather embarrassing! How far should we go in trying to ‘correct’ the mistakes of the past? (Credit: Medium)
Perhaps we should do what ‘Lovecraft Country’ does, turn racism around on itself and thereby demonstrate that it is really the racists, and racism itself that is truly ‘vile, loathsome and sub-human”!!
It is often said that history is written by the winners. Over the past 100 years or so however many of the discoveries made by the science of archaeology have provided a more balanced view of human history, shining a light on some of the forgotten peoples from the past.
For those cultures whose written records are lost, if they ever existed, archaeology is the only means we have to learn anything about them. (Credit: Phys.org)
To recover that knowledge it is of course important that there still be archaeological locations and artifacts from the distant past that can be excavated and studied. However oftentimes throughout history the remains of the past have suffered because of the needs of succeeding generations. One prime example of this would be the city of Troy, which was rebuilt, time and time again during the classical period. Each new layer of habitation causing damage to the earlier layers beneath it.
The city of Troy actually consists of at least nine cities built one on top of the other. Homer’s Troy was either layer 6 or 7 and much of the evidence was destroyed when the later layers were built on top of them. (Credit: www.troyexcavations.com)
Of
course those people of ancient times could be forgiven for not preserving the
past, what few resources they had were needed just to keep them alive. It’s
really only been in the last 200 years or so that human society has been able
to afford archaeological research of any kind. Unfortunately that doesn’t mean
that archaeology and economic progress no longer come into any kind conflict.
One very significant such conflict recently became big news in the land down under. It is thought that the first humans to reach Australia may have done so as much as 50,000 years ago and that the aboriginal population there remained in almost complete isolation until the late 18th century.
The first humans reached Australia about 50,000 years ago (KYA means Thousand Years Ago). They spread out quickly and within 10,000 years the entire continent was inhabited. (Credit: The Conversation)
That long period of isolation makes Australia a very important labouratory for the study of human societies and how they change and develop over time. Unfortunately the aboriginal population in Australia never grew very large nor did they ever develop cities or settlements of any kind. That makes any archaeological remains in Australia both very rare, and very valuable.
The musical instrument the didgeridoo is a well known symbol of Australian aboriginal culture. (Credit: Pinterest)
Which is why the destruction of two caves in Juukan George in the remote Pilbara region of western Australia by the mining company Rio Tinto is such a tragedy. Initial surveys of the caves over the last few years had found several traces of human activity, stone and bone tools along with other animal remains and even a lock of human hair. When dated the artifacts were found to be about 46,000 years old making them some of the earliest evidence for human habitation in Australia.
The two caves at Juukan George. Looks exactly like the sort of place a stone age culture would occupy but we’ll never know the extent of the occupation thanks to the mining company Rio Tinto whose engineers you can already see working in the upper background. (Credit: Jacobin)
None of that mattered to Rio Tinto, there was iron ore in the hills that contained the caves and they wanted it, and they wanted it now. So it was that in May of 2020 the two caves were blasted out of existence in order to clear the way for mining operations. Just another example of short sighted corporate greed leading to the loss of something that can never be replaced.
I dare say that this was the attitude of the corporate executives at Rio Tinto when they destroyed the Juukan caves. (Credit: Robert Steveson)
Not that Rio Tinto did anything illegal. The company had a 2013 agreement from the government of western Australia giving them permission to mine the site and in the days leading up to the detonation they gathered all of their corporate lawyers in case the Puutu Kunti Kurrama or some other indigenous people’s organization tried to obtain a judge’s injunction in an effort to stop the blasting operation.
Like a great wound in Mother Earth modern mining operations are so destructive of the local environment that the damage can last for decades. (Credit: New York Post)
Unfortunately it was only after the destruction at Juukan George that the protests and questions from government officials began. A month after the caves were destroyed Rio Tinto was forced to publish an apology for their cultural banditry. Since that time the company’s board of directors have forced out the CEO Jean-Sebastien Jacques and his top two assistants. In typical corporate fashion the trio had their yearly bonuses taken away BUT they reached an amicable departure settlement with the company, which I bet was worth more than the bonuses.
Protesters rally outside the Rio Tinto office after the destruction of Australian Indigenous sacred sites in Perth, June 9, 2020. Rio Tinto chief executive Jean-Sebastien Jacques will leave the Anglo-Australian mining giant by March over the destruction of the sacred sites, the company said on Friday, Sept. 11, 2020. (Richard Wainwright/AAP Image via AP)
In
the words of Rio Tinto’s chairman Simon Thompson, “…what happened at
Juukan was wrong.” To try to recover something of the company’s image he
and the other Rio Tinto stockholders have agreed to help promote the
preservation of other aboriginal heritage sites in the future.
But I’ll bet you they are still taking that iron ore from Juukan George!
P.S. News has just been released that the people of the Island of Bougainville in the nation of Papua New Guinea are accusing the Rio Tinto Corporation of releasing poisons such as mercury into the rivers of the island from an abandoned copper and gold mine. The residents of Bougainville maintain that they have suffered from the environmental policies of Rio Tinto for years but since the mine has stopped production the company has made no attempt to clean up the site or prevent a possible disaster happening to the people of Bougainville.
The Rio Tinto gold and copper mine on Bougainville, now abandoned. Why isn’t the company required to restore the site to something like it’s original state. Instead it was simply left to leak dangerous elements like mercury into the local water systems. (Credit: Mining .com)
Why does this news about Rio Tinto not surprise me?
Let me just take a moment before we start to address the nonsensical issue of whether we should be calling the damage done to our environment by the emission of huge amounts of greenhouse gasses global warming or climate change. I look at it this way; the greenhouse gasses are causing the Earth to warm, that’s global warming. That warming then directly causes a large variety of different problems, everything from sea level rise, more intense tropical storms to excessive droughts. That’s climate change.
Multiply this image tens of thousands of times to get an idea of the pollution we’re just pouring into the atmosphere. Can anyone really believe it’s not having any effect on our planet? (Credit: Save Our Eco)
In other words, greenhouse gasses cause global warming. Global warming then causes the different aspects of climate change.
The greenhouse effect in a nutshell. The warming of the Earth by CO2 and other gasses hs been known now for almost two centuries, and is easy to verify in a lab, so how can anyone deny it? (Credit: NIWA)
Honestly though, it really doesn’t matter what you call it so long as you recognize the damage that we are doing to the only planet we have and are willing to do something to solve the problem. Whether you call it global warming or climate change it’s still an ever growing danger that we have to face.
This year’s Atlantic Hurricane season has been so severe that we’ve already run out of names for storms and had to resort to used the Greek alphabet, and there’s still a month left go! (Credit: NBC DWF)
And the evidence of how dangerous the situation is becoming grows every day. This year’s Atlantic hurricane season is demolishing all previous records for the number of storms but today I’d like to talk about the crisis in the western part of the US due to the unprecedented number and intensity of wildfires.
Like the hurricanes in the Atlantic the number of wildfires in the western US this year is simply unprecedented. (Credit: National Geographic)
Now I used to live in California’s silicon valley, also known as the San Francisco Bay Area, during the 1980s so I am personally familiar with how large areas of California can go from March to November without a single drop of rainfall. I can remember being warned about the dangers of drought conditions, I have seen how square kilometers of grass and brush will turn brown because of lack of water and I have myself witnessed several, small wildfires. I know from personal experience that wildfires are just a natural part of California’s ecology.
I have driven across the Golden Gate Bridge in San Francisco more than a hundred times but because of the smoke and glow of the wildfires I can barely recognize it. (Credit: Deadline)
However
the extent of the fires now burning not just in California but throughout the
western half of the US is far beyond anything in human experience. When I see
some of the images coming out of San Francisco, coming from places I know very
well, turned orange by the smoke and distant glow of massive fires I’m chilled.
That hellscape is not the California I knew.
In just the past month of August the western US has seen a number of unprecedented weather and fire conditions. A fire tornado was observed for the first time ever just north of Lake Tahoe. The hottest temperature ever reliably recorded on Earth’s surface, 54.5ºC (130ºF), was measured in Death Valley. A dry thunderstorm swept across Northern California sparking 11,000 lightning strikes that ignited over 300 fires, two of which grew to become the largest even seen in the state. So far this year over 7 million acres of forest land has been burned, a staggering amount far surpassing any previous year’s total, and the fire season isn’t over yet.
The highest temperature ever recorded just recently occured in California’s Death Valley. (Credit: Forbes)Dry lightning, lightning without rain, is another feature of California’s extreme weather. (Credit: CNN.com)
Meteorologically what is happening out west is that the increasing temperatures are leading to the growth of a massive ‘heat dome’, a high pressure system that becomes stuck in the same region of the Earth due to the jet streams. These heat domes have led to severe drought conditions causing the death of millions of trees that provide even more fuel for the fires triggered by the heat.
A Massive high pressure system has parked itself over the western US causing a historic heat wave. (Credit: CBS News)
The statistics back up the idea that what we are seeing is an ongoing trend rather than a singular, extraordinary season. Although the National Interagency Fire Center only began keeping more accurate records in 2000 those 20 years of records for California are enough to illustrate the alarming increase in the number of acres of forest burnt each year.
Acres of California woodlands destroyed by fire over the last 20 years.. (Credit: Wikipedia)
And
remember the total for 2020 was as of the 11th of September and has grown
considerably since then. Adding in the land area burnt in the other western
states and the total area of forest destroyed now comes to something larger
than the entire state of New Jersey.
But California isn’t unique; the golden state is just a bit out in front of the rest of us in the changes happening due to climate change. Back in August the Midwest States, especially Iowa, suffered badly from a rare storm system known as a derecho, a wall of storms hundreds of kilometers in width. The straight line winds developed in a derecho can be as strong as those in a tornado but the damage caused is spread out over a much wider path. In addition to massive destruction to homes and other structures several hundred square kilometers of crops were destroyed, a real tragedy in the agricultural heartland of America.
Just some of the destruction caused by the derecho storm that swept across the plains states in August. (Credit: CNN.com)
Once more we know what is happening, Earth’s rising temperatures simply means that more energy is being pumped into the weather systems around the world. More energy means more severe weather of all kinds, more severe hurricanes and more sever droughts, more and stronger tornadoes and just stronger storms in general.
And
all just because we refuse to shift our energy production from quick, easy,
cheap fossil fuels, which will run out eventually anyway, to longer lasting,
sustainable forms of energy production. We all know that the long term cost of
staying on our present path will be enormously greater than any short term
savings. When will we finally find the strength of will to do what we must?
