Researchers say the analysis suggests Homo sapiens may have emerged at least half a million years earlier than previously thought. The skull, known as Yunxian 2, was discovered in Hubei Province ...

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"The pace of change we’re seeing today is unlike anything we know of in the past 66 million years," said ecologist Jack ...

There are signs deep beneath the Pacific Ocean that an exploding star once sent cosmic rays blasting out towards Earth, and ...