Humans
Homo erectus used two different kinds of stone tools
Skull fragments from Homo erectus found alongside stone tools in Ethiopia suggest the ancient hominin used more tool technology than we thought
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Skull fragments from Homo erectus found alongside stone tools in Ethiopia suggest the ancient hominin used more tool technology than we thought
Heading into deep space will lead to a new species of human evolving, says the UK Astronomer Royal - and could pave the way to immortals who can conquer the galaxy