The most severe mass extinction in Earth's history occurred with almost no early warning signs, according to a new study by scientists at MIT, China, and elsewhere.
Earth Sciences
Sep 19, 2018
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1585
Of all the species that have ever lived, more than 99% are now extinct. Most of them quietly disappeared during periods of "background extinction", whereby a handful of species become extinct every 100,000 years or so.
Earth Sciences
Jun 29, 2017
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42
An international team of researchers has found evidence that suggests atmospheric CO2 levels at the end of the Triassic era were nearly the same as those predicted for the 21st century. In their paper published in the journal ...
The late Devonian extinction, about 370 million years ago, is one of the 'Big Five.' It killed up to 80 percent of species, obliterating the lavish Devonian coral reef ecosystem. The final pulse in this multi-step crisis, ...
Earth Sciences
May 1, 2018
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311
The forerunner of dinosaurs like three-horned Triceratops was a bird-hipped creature the size of a turkey that lived in herds in South America and liked to munch on ferns, scientists said Wednesday.
Archaeology
Aug 6, 2014
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0
Determining what killed the dinosaurs 66 million years ago at the end of the Cretaceous Period has long been the topic of debate, as scientists set out to determine what caused the five mass extinction events that reshaped ...
Earth Sciences
Sep 12, 2022
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376
Since the Cambrian Explosion, ecosystems have suffered repeated mass extinctions, with the "Big 5" crises being the most prominent. Twenty years ago, a sixth major extinction was recognized in the Middle Permian (262 million ...
Earth Sciences
Apr 15, 2015
1
45
Black rhinos, red wolves, whooping cranes: the global list of endangered species grows every year to the point where some researchers say we're witnessing the start of Earth's next mass extinction.
Earth Sciences
Nov 10, 2017
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38
Marine turtles experienced an evolutionary windfall thanks to a mass extinction of crocodyliforms around 145 million years ago, say researchers.
Archaeology
Mar 9, 2016
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198
A long-delayed conference on how to restore the faltering health of global oceans kicked off in Lisbon on Monday, with the head of the UN saying the world's seas are in crisis.
Environment
Jun 27, 2022
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