Trevor Sandwith is director of IUCN’s Global Programme on Protected Areas and focuses on mainstreaming biodiversity and protected areas into policy, development planning, and climate change responses.

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The world is currently facing a paradox: the true value of ecosystem services is finally being recognized by governments and intergovernmental bodies at the very time that these services are declining more rapidly than ever before. The total economic value of ecosystem services is estimated in terms of tens of trillions of dollars every year, …

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