6b7a441e   
   XPost: alt.global-warming, alt.society.liberalism, sac.politics   
   XPost: talk.politics.guns   
   From: john.doe@myemail.invalid   
      
    Fuck the kikes. Global Warming does not exist.   
      
   On Jul 3, 2025 at 2:05:58 AM EDT, "schilling"  wrote:   
      
   > Around 252 million years ago, life on Earth suffered its most catastrophic   
   > blow to date: a mass extinction event known as the “Great Dying” that   
   > wiped out around 90% of life.   
   >   
   > What followed has long puzzled scientists. The planet became lethally hot   
   > and remained so for 5 million years.   
   >   
   > A team of international researchers say they have now figured out why   
   > using a vast trove of fossils — and it all revolves around tropical   
   > forests.   
   >   
   > Their findings, published Wednesday in the journal Nature Communications,   
   > may help solve a mystery, but they also spell out a dire warning for the   
   > future as humans continue to heat up the planet by burning fossil fuels.   
   >   
   > The Great Dying was the worst of the five mass extinction events that have   
   > punctuated Earth’s history, and it marked the end of the Permian   
   > geological period.   
   >   
   > It has been attributed to a period of volcanic activity in a region known   
   > as the Siberian Traps, which released huge amounts of carbon and other   
   > planet-heating gases into the atmosphere, causing intense global warming.   
   > Enormous numbers of marine and land-based plants and animals died,   
   > ecosystems collapsed and oceans acidified.   
   >   
   > What has been less clear, however, is why it got so hot and why “super   
   > greenhouse” conditions persisted for so long, even after volcanic activity   
   > ceased.   
   >   
   > “The level of warming is far beyond any other event,” said Zhen Xu, a   
   > study author and a research fellow at the School of Earth and Environment   
   > at the University of Leeds.   
   >   
   > Some theories revolve around the ocean and the idea that extreme heat   
   > wiped out carbon-absorbing plankton, or changed the ocean’s chemical   
   > composition to make it less effective at storing carbon.   
   >   
   > But scientists from the University of Leeds in England and the China   
   > University of Geosciences thought the answer may lie in a climate tipping   
   > point: the collapse of tropical forests.   
   >   
   > The Great Dying extinction event is unique “because it’s the only one in   
   > which the plants all die off,” said Benjamin Mills, a study author and a   
   > professor of Earth system evolution at the University of Leeds.   
   >   
   > To test the theory, they used an archive of fossil data in China that has   
   > been put together over decades by three generations of Chinese geologists.   
   >   
   > They analyzed the fossils and rock formations to get clues about climate   
   > conditions in the past, allowing them to reconstruct maps of plants and   
   > trees living on each part of the planet before, during and after the   
   > extinction event. “Nobody’s ever made maps like these before,” Mills   
   told   
   > CNN.   
   >   
   > The results confirmed their hypothesis, showing that the loss of   
   > vegetation during the mass extinction event significantly reduced the   
   > planet’s ability to store carbon, meaning very high levels remained in the   
   > atmosphere.   
   >   
   > Forests are a vital climate buffer as they suck up and store planet-   
   > heating carbon. They also play a crucial role in “silicate weathering,” a   
   > chemical process involving rocks and rainwater — a key way of removing   
   > carbon from the atmosphere. Tree and plant roots help this process by   
   > breaking up rock and allowing fresh water and air to reach it.   
   >   
   > Once the forests die, “you’re changing the carbon cycle,” Mills said,   
   > referring to the way carbon moves around the Earth, between the   
   > atmosphere, land, oceans and living organisms.   
   >   
   > Michael Benton, a professor of paleontology at the University of Bristol,   
   > who was not involved in the study, said the research shows “the absence of   
   > forests really impacts the regular oxygen-carbon cycles and suppresses   
   > carbon burial and so high levels of CO2 remain in the atmosphere over   
   > prolonged periods,” he told CNN.   
   >   
   > It highlights “a threshold effect,” he added, where the loss of forests   
   > becomes “irreversible on ecological time scales.” Global politics   
   > currently revolve around the idea that if carbon dioxide levels can be   
   > controlled, damage can be reversed. “But at the threshold, it then becomes   
   > hard for life to recover,” Benton said.   
   >   
   > This is a key takeaway from the study, Mills said. It shows what might   
   > happen if rapid global warming causes the planet’s rainforests to collapse   
   > in the future — a tipping point scientists are very concerned about.   
   >   
   > Even if humans stop pumping out planet-heating pollution altogether, the   
   > Earth may not cool. In fact, warming could accelerate, he said.   
   >   
   > There is a sliver of hope: The rainforests that currently carpet the   
   > tropics may be more resilient to high temperatures than those that existed   
   > before the Great Dying. This is the question the scientists are tackling   
   > next.   
   >   
   > This study is still a warning, Mills said. “There is a tipping point   
   > there. If you warm tropical forests too much, then we have a very good   
   > record of what happens. And it’s extremely bad.”   
   >   
   > https://www.cnn.com/2025/07/02/climate/great-dying-extinction-tipping-   
   > point-tropical-forests?iid=cnn_buildContentRecirc_end_recirc   
      
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