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Currently you are able to watch "Great Moments in Evolution" streaming on Amazon Prime Video, Curiosity Stream, CuriosityStream Amazon Channel, CuriosityStream Apple TV Channel, Amazon Prime Video with Ads or buy it as download on Amazon Video.
It all began with a single cell which, throughout the course of nearly 4 billion years, evolved into the diversity of life that surrounds us. No one knows how many species there are on our planet. Estimates vary between 10 and 100 million. But no matter how many species there may be - all life stems from a single common primeval ancestor.