Heard this old Radiolab while I was driving to the store today. It's a fascinating story about how, after life appeared, it was basically the same for 2 billion years. Tiny, boring, simple. And then something happened. Two cells somehow came together, one inside the other, and while this would normally result in death for one or both, in this case, it worked, and this partnership - this single cell - was the ultimate Genghis Khan, the progenitor of all complex life on Earth today.
radiolab.org
Cellmates
There’s a black hole in the middle of the history of life: how did we go from tiny bags of chemicals to the vast menagerie of creatures we see around us?
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