Some animals, such as iguanas (like this one in Ecuador), exposed to tourists produce fewer stress hormones. Photos: Corbis

How ecotourists actually make things worse for wildlife

Animals exposed to tourists on a regular basis become less vigilant for predators and dangerously trusting of humans, allowing poachers to profit

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Some animals, such as iguanas (like this one in Ecuador), exposed to tourists produce fewer stress hormones. Photos: Corbis
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