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A Conversation with Koko
Scientists teach a gorilla to use sign language to communicate with them.
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Black Mamba
Scientists aim to change the public perception of one of Africa's most dangerous snakes.
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Patrick and the Whale
Patrick Dykstra has a life-changing encounter with a sperm whale and uncovers their world.
Nature
Attenborough and the Jurassic Sea Monster
Sir David Attenborough and experts unearth the fossil of the largest Jurassic predator.
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The Story of Cats | Into the Americas
Discover how cats first crossed from Asia into North America and became the top predators.