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When Did Humans First Harness Fire?

Earth didn't always have the capacity for fire but once it was finally able to, when did our early human ancestors harness its full power?

TestTube Plus is built for enthusiastic science fans seeking out comprehensive conversations on the geeky topics they love. Host Trace Dominguez digs beyond the usual scope to deliver details, developments and opinions on advanced topics like AI, string theory and Mars exploration. TestTube Plus is also offered as an audio podcast on iTunes.