How Did Life Begin? - The Story Of Earth And Life
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Once upon a time more than 4.5 billion years ago, there was an unnamed planet, circling an unnamed star. Its surface was molten lava and it had no life upon it. Most of the big rocks that had come crashing together in a series of literal world-shaking events had been collected. They stopped crashing into this planet for a very long time.
It began to cool and form a solid surface. Then about 3.9 billion years ago, i
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