
Great Filter
The End Of The World with Josh Clark
00:00
Evolution on Earth - A Brief History
Life on Earth first appeared 3.8 billion years ago as simple single-celled organisms. Over time, some new versions of these simple cells began to appear and they had new specializations. Then comes the invention of sex, a new type of reproduction or two entirely distinct individuals combined to form a new third version of themselves. And it's about here that natural selection cracks its knuckles and comes aboard as the driving force of evolution in our galaxy.
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