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Artist's impression of the catastrophe. (Katrina Kenny © 2022, author provided) Some 252 million years ago the world was going through a tumultuous period of rapid global warming. To understand what caused it, scientists have looked to one particular event in which a volcanic eruption in what is now Siberia spewed huge volumes of greenhouse gas into the atmosphere. However, there is evidence the climate was already changing before this. Sea surface temperatures had increased by more than 6-8 ℃ in the hundreds of thousands of years leading up to the Siberian outpouring. Temperatures increased again after it, so much...

Some 252 million years ago, Earth almost died. In the oceans, 96 percent of all species became extinct. It’s harder to determine how many terrestrial species vanished, but the loss was comparable. This mass extinction, at the end of the Permian Period, was the worst in the planet’s history, and it happened over a few thousand years at most — the blink of a geological eye. On Thursday, a team of scientists offered a detailed accounting of how marine life was wiped out during the Permian-Triassic mass extinction. Global warming robbed the oceans of oxygen, they say, putting many species...

Did a Planetary Society citizen scientist help find one of Earth’s biggest impact craters? About 66 million years ago, a 10-kilometer-wide hunk of rock smashed into Earth near what is now Mexico's Yucatán Peninsula.The impact created a global dust cloud that snuffed out the sunlight, leading to the demise of 80 percent of Earth's plants and animals—including most of the dinosaurs. A 200-kilometer-wide crater buried near the city of Chicxulub is all that's left. It's ground zero for one of the world's most notable extinction events.But throughout Earth's history, there have actually been five major extinction events. The largest of...

Scientists believe a massive object that could change our understanding of history is hidden beneath the Antarctic ice. The huge and mysterious “anomaly” is thought to be lurking beneath the frozen wastes of an area called Wilkes Land. The area is 151 miles across and has a minimum depth of about 2,700 feet. Some researchers believe it is the remains of a truly massive asteroid more than twice the size of the Chicxulub space rock that wiped out the dinosaurs. If this explanation is true, it could mean this killer asteroid caused the Permian-Triassic extinction event, which killed 96 percent...

WASHINGTON (AFP) - A meteor's roaring crash into Antarctica -- larger and earlier than the impact that killed the dinosaurs -- caused the biggest mass extinction in Earth's history and likely spawned the Australian continent, scientists said. Ohio State University scientists said the 483-kilometer-wide (300-mile-wide) crater is now hidden more than 1.6 kilometers (one mile) beneath the East Antarctic Ice Sheet. "Gravity measurements that reveal its existence suggest that it could date back about 250 million years -- the time of the Permian-Triassic extinction, when almost all animal life on Earth died out," the university said in a statement Thursday....

Feb. 4, 2009 -- An ancient killer is hiding in the remote forests of Siberia. Walled off from western eyes during the Soviet era and forgotten among the endless expanse of wilderness, scientists are starting to uncover the remnants of a supervolcano that rained Hell on Earth 250 million years ago and killed 90 percent of all life. Researchers have known about the volcano -- the Siberian Traps, for years. And they've speculated that the volcanic rocks, which cover an area about the size of Alaska, played a role in runaway global warming that led to the end -- Permian...

Catastrophic asteroid impacts are gaining a credible edge over violent volcanic eruptions as the greatest killers Earth has ever seen, according to two pieces of scientific detective work reported in tomorrow's issue of the journal Science. The first cataclysm in question occurred about 250 million years ago, when according to the fossil record more than 90 percent of Earth's marine species and 70 percent of life on land perished. The event is known as the Permian-Triassic (P-T for short) mass extinction, named because it falls on the boundary between the two geological eras. The second event, known as the Cretaceous-Tertiary...

Fungi are single or multi-celled organisms that break down organic materials, such as rotting wood, in order to absorb their nutrients. Neither plant nor animal, they range from mushrooms to single-celled yeast. Scientists were investigating organic chemicals trapped in an Italian sedimentary rock formation when they found evidence that an extinct fungus feasted on dead wood during a time when the world’s forests had been catastrophically eradicated.[1] What could have caused such a universal effect on forests, and why does organic material remain in rocks that are supposedly 251.4 million years old?...

Tiny organisms that covered the planet more than 250 million years ago appear to be a species of ancient fungus that thrived in dead wood, according to new research published October 1 in the journal Geology. The researchers behind the study, from Imperial College London and other universities in the UK, USA and The Netherlands, believe that the organisms were able to thrive during this period because the world's forests had been wiped out. This would explain how the organisms, which are known as Reduviasporonites, were able to proliferate across the planet... By analysing the carbon and nitrogen content of...

http://www.spaceref.com/news/viewpr.html?pid=7246 PRESS RELEASE Date Released: Monday, January 28, 2002 Marshall Space Flight Center The Great Dying 250 Million Years Ago 250 million years ago something unknown wiped out most life on our planet. Now scientists are finding buried clues to the mystery inside tiny capsules of cosmic gas. January 28, 2002: It was almost the perfect crime. Some perpetrator -- or perpetrators -- committed murder on a scale unequaled in the history of the world. They left few clues to their identity, and they buried all the evidence under layers and layers of earth. The case has gone unsolved for ...