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Nature
Three-toed Sloth: The Slowest Mammal On Earth
Three-toed sloths are some of the slowest and seemingly laziest creatures in the world. Instead of evolving to eat more, they evolved to do less.
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In northern Kenya, a remarkable conservation experiment is unfolding at Reteti Sanctuary.
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Follow a female mountain lion in the Montana mountains over the course of a decade.
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See how the Arctic’s most enigmatic animals are coping as the sea ice melts.
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