It took humans only a few thousand years to progress from basic tools to global domination. But considering Earth’s vast history, could another advanced civilization have existed long before us? This ...

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It’s one of the most longstanding questions in biology: how did life first arise? Research on the topic abounds, but there’s no one accepted answer. And according to one new paper, the chances that ...

NASA’s discovery of potential evidence of ancient life on Mars means “our galaxy could be teeming with life,” says a ...