The story of the American bison teaches us about the impacts we have, as humans, on species and their habitats. As western civilisation spread across America in the 1800s, bison were hunted to the brink of extinction until less than 1000 individuals were left. As the 19th century began, zoos and conservationists worked together to save the species by protecting those remaining individuals and the areas where they lived. Today, their numbers in the wild, have increased to over 30,000 and their cl

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