Since 1980, the planet’s north and south poles have moved roughly four meters in distance, and new research shows that shifts in the Earth’s rotational axis have accelerated since the 1990s as a result of the widespread melting of glaciers—a clear manifestation, scientists say, of the climate emergency.
“Faster ice melting under global warming was the most likely cause of the directional change of the polar drift in the 1990s,” Shanshan Deng—a researcher from the Institute of Geographic Sciences and Natural Resources Research at the Chinese Academy of Sciences—told the American Geophysical Union (AGU) Thursday.
In a study published last month in the peer-reviewed journal Geophysical Research Letter, Deng and her co-authors found that changes in terrestrial water storage—particularly the accelerated loss of water stored on land due to melting glaciers—redistributed enough of the world’s mass to drive “the rapid polar drift toward the east after the 1990s.”
As The Guardian explained Friday:
The planet’s geographic north and south poles are the point where its axis of rotation intersects the surface, but they are not fixed. Changes in how the Earth’s mass is distributed around the planet cause the axis, and therefore the poles, to move.
In the past, only natural factors such as ocean currents and the convection of hot rock in the deep Earth contributed to the drifting position of the poles. But the new research shows that since the 1990s, the loss of hundreds of billions of tons of ice a year into the oceans resulting from the climate crisis has caused the poles to move in new directions.
The scientists found the direction of polar drift shifted from southward to eastward in 1995 and that the average speed of drift from 1995 to 2020 was 17 times faster than from 1981 to 1995.
The AGU noted that “researchers have been able to determine the causes of polar drifts starting from 2002 based on data from the Gravity Recovery and Climate Experiment (GRACE), a joint mission by NASA and the German Aerospace Center, launched with twin satellites that year and a follow-up mission in 2018.”
Data from the GRACE satellites has enabled scientists to “link glacial melting to movements of the pole in 2005 and 2012, both following increases in ice losses,” The Guardian reported. “But Deng’s research breaks new ground by extending the link to before the satellite’s launch, showing human activities have been shifting the poles since the 1990s, almost three decades ago.”
While Deng’s team showed that the accelerated decline in water stored on land stemming from glacial losses “is the main driver” of polar drift since the 1990s, the researchers wrote that groundwater depletion in non-glacial regions has also contributed to the movements.
“Groundwater is stored under land but, once pumped up for drinking or agriculture, most eventually flows to sea, redistributing its weight around the world,” The Guardian noted. “In the past 50 years, humanity has removed 18 trillion tons of water from deep underground reservoirs without it being replaced.”
Vincent Humphrey, a climate scientist at the University of Zurich who was not involved in the study, told AGU that the new research “tells you how strong this mass change is—it’s so big that it can change the axis of the Earth.”
This shift in the Earth’s axis, however, is too small to affect daily life, Humphrey added. It could change the length of day, but only by milliseconds.
Nonetheless, other climate experts such as Jonathan Overpeck of the University of Arizona, have said before that the mere fact that the climate crisis is driving polar movements demonstrates “how real and profoundly large an impact humans are having on the planet.”
Republished from CommonDreams.org under Creative Commons
South Korean Toilet Turns Poo Into Green Energy and Pays Its Users Digital Cash
What if your morning #2 not only powered your stove to cook your eggs, but also allowed you to pay for your coffee and pastry on the way to class?
It seems like an absurd question, but one university in South Korea has invented a toilet that allows human excrement to not only be used for clean power, but also dumps a bit of digital currency into your wallet that can be exchanged for some fruit or cup noodles at the campus canteen, reports Reuters.
The BeeVi toilet – short for Bee-Vision – was designed by urban and environmental engineering professor Cho Jae-weon of the Ulsan National Institute of Science and Technology (UNIST), and is meant to not only save resources but also reward students for their feces.
The toilet is designed to first deliver your excrement into a special underground tank, reducing water use, before microorganisms break the waste down into methane, a clean source of energy that can power the numerous appliances that dorm life requires.
“If we think out of the box, feces has precious value to make energy and manure,” Cho explained. “I have put this value into ecological circulation.”
The toilet can transform approximately a pound of solid human waste – roughly the average amount people poop per day – into some 50 liters of methane gas, said Cho. That’s about enough to generate half a kilowatt hour of electricity, enough to transport a student throughout campus for some of their school day.
Cho has even devised a special virtual currency for the BeeVi toilet called Ggool, or honey in Korean. Users of the toilet can expect to earn 10 Ggool per day, covering some of the many expenses students rack up on campus every day.
Students have given the new system glowing reviews, and don’t even mind discussing their bodily functions at lunchtime – even expressing their hopes to use their fecal credits to purchase books.
Heat Wave Kills Over 1 BILLION Sea Creatures on Canada West Coast, Experts Say
Researchers in Canada are reporting that over 1 billion marine animals on Canada’s Pacific coast are likely to have died in last week’s record-shattering heat wave, showing how ecosystems not accustomed to such high temperatures are especially vulnerable to changing conditions.
The deadly “heat dome” that settled over British Columbia and the U.S. Pacific Northwest for five days is believed to have killed at least 500 people in Canada, and pushed temperatures to extreme temperatures of 104F (40C), sparking wildfires that are burning across the Canadian province.
Multiple experts are now saying that the heat wave also took a horrifying toll on marine life, leaving “postapocalyptic” scenes in its wake.
Marine biologist Christopher Harley of the University of British Columbia knew, when he saw the harrowing weather forecasts, that when the tide dropped the sweltering conditions would absolutely fry the mussels, barnacles and sea stars that were exposed.
When the heatwave actually struck, he was devastated by the stench of decay and the vast death toll sustained by the local ecosystem.
“The shore doesn’t usually crunch when you walk on it,” he told The Guardian. “But there were so many empty mussel shells lying everywhere that you just couldn’t avoid stepping on dead animals while walking around.”
Mussels and barnacles can typical deal with harsh temperatures as high as 113F for a few hours – but any more than that is simply not survivable.
Harley told the New York Times that the loss of mussels likely reaches into the hundreds of millions.
However, when factoring in the death of other marine animals that once lived on the shore and resided on the mussel beds – such as hermit crabs and their crustacean relatives, worms, sea cucumbers and other creatures – the number could quite easily exceed one billion.
“It just feels like one of those postapocalyptic movies,” Harley said.
Harley’s colleagues have also reported on dead sea anemones, rock fish and oysters in the region.
In neighboring Alberta, a massive number of fish also washed up on the shores, likely due to the heat wave.
Fortunately, mussels are able to regenerate over about two years. Starfish and clams, however, live for decades and reproduce much more slowly.
The domino effect of such a vast loss of marine life could be felt on other animals in the ecosystem such as sea ducks, a migratory bird that feeds on mussels in the winter before migrating to the Arctic.
The horrific loss shows that the pace of warming climate conditions is likely outstripping the ability of creatures simply to survive – a prospect that makes Harley feel saddened, but he is still trying to find hope.
“A lot of species are not going to be able to keep up with the pace of change,” he said. “Ecosystems are going to change in ways that are really difficult to predict. We don’t know where the tipping points are.”
“Eye of Fire” Blaze In Gulf of Mexico Literally Shows the Ocean Caught on Fire
A massive ring of fire exploded onto the surface of the Gulf of Mexico on Friday, creating apocalyptic imagery that enveloped social media with unbelievable imagery of the “eye of fire.”
The harrowing “fire in the sea” came following a gas leak in an underwater pipeline near a drilling platform that was owned by Mexican state-owned oil company PEMEX.
The blaze, which resembled a lava flow from a volcano took some five hours to fully contain, and was extinguished by 10:45 a.m., reports USA Today.
In footage from the scene, a hellish orange glow can be seen beneath the churning ocean as boats sprayed streams of water in hopes to put out the blaze.
One video, which seems to depict footage out of a disaster movie, has accumulated over 21 million views at the time of this writing.
User Dave Anthony said: “Never in your life forget the time humans caught the ocean on fire and then tried to put it out by spraying water on it.”
While journalist Christopher Bouzy tweeted: “I am not sure how spraying water on a fire that is literally in the ocean is going to help put it out. I need someone to make it make sense for me.”
Company workers resorted to using nitrogen to subdue the blaze.
Fortunately, there were no injuries resulting from the disaster – although it is too early to gauge the impact on the local environment.