BBC Horizon - We Are The Aliens
BBC Horizon explores the fascinating science of panspermia, the idea that life on earth came from another planet. A group of scientists are part of a groundswell of opinion who claim that there is a good chance that life on earth began when alien microbes first fell to earth about 3.8 billion years ago. If this is correct, then all creatures on earth evolved from alien life forms. In effect, even homo sapiens are descended from aliens: we are the aliens.
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