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Around 2.4 billion years ago, the air over Earth began to change. Microbes in the oceans, the cyanobacteria, had been running a chemical reaction that split wat...
The fossil record contains the unambiguous evidence of five separate occasions on which most of the species alive at the time died, in geological terms, very qu...
Chemical traces preserved in ancient rocks indicate that marine environments were deteriorating long before the catastrophe that wiped out vast numbers of speci...
In the wake of the catastrophic Chicxulub asteroid impact roughly 66 million years ago, three-quarters of the plant and animal species on Earth collapsed into e...
Scientists have shown conclusively for the first time that tiny marine organisms in polar oceans survived the mass extinction event that wiped out prehistoric d...