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Madagascar is a biodiversity hot-spot and now the government plans to triple the amount of land put aside for conservation – but which bits most deserve protection? The ´óÏó´«Ã½'s World on the Move migration series follows an African elephant in the Kruger National Park as he sets off to find a mate. How young male monkeys prefer male toys and the females played with both. Why the Antarctic environment is under threat from tourists and increased shipping. The brain chemistry of people addicted to methamphetamine.