Scientists don't call it the "Great Dying" for nothing. About 252 million years ago, upward of 80% of all marine species ...
Humans have remodeled the Earth so profoundly that in 2000, atmospheric chemist Paul Crutzen and biologist Eugene Stoermer ...
Archaeologists have discovered the remains of at least five woolly mammoths at a site in Austria. The remains suggest that ...
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