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Can Bones Reveal How Dogs Evolved from Wolves?
A researcher uncovers 30,000-year-old skulls from Europe, which appear to be halfway between those of wolves and domestic canines. But do the skulls actually belong to the ancestors of today's dogs?
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A family turns to science in their struggle to rediscover a history obscured by slavery.
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How did life bounce back after a cataclysmic extinction wiped out some 90% of all species?
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See how life made the leap to land, turning a barren landscape into a lush, green world.
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Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.