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Fewer than 800 mountain gorillas remain on Earth. More than a third live in Bwindi Impenetrable National Park, providing Uganda a major source of tourist dollars. Besides suffering loss of habitat, the gorillas are threatened by new ailments, such as measles and scabies, picked up from people who live around the park. Gorillas and humans are close genetic cousins, sharing 98% of their DNA. Rick Loomis / Los Angeles Times
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