Modern climate models fail to reproduce rapid climate changes in the past and so are unable to accurately project the future.
Digging into the details, researchers are concluding that the greatest volcanic eruption of the last 2 million years was not as catastrophic for early modern humans as they used to think.
Manipulating microbes shows need to redefine life on Earth, again.
Lynn Margulis died on Nov. 22, age 73, succumbing to the fate that will eventually meet us all, the inevitable conclusion of a train of events that, as she identified, was set in motion billions of years ago.
Back-up species play a critical role in keeping populations from crashing.
Early life may have formed between a rock and a wet place.
A new theory argues that the first life on Earth got started "between the sheets" -- sheets of flaky mica minerals, that is.
New evidence points to a massive asteroid or comet smashed into the planet some 12,900 years ago during a period called the Younger Dryas.
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