BBC: The world's national parks and nature reserves receive eight billion tourist visits a year, generating around $600bn of spending, according to research.
The tourism income vastly outweighs the $10bn a year spent safeguarding them, says a Cambridge University team.
The study, published in PLOS Biology, highlights the need for more investment in protected areas, they say.
The idea of natural capital, the worth of natural assets, is increasingly being used in policy making.
It is based on......
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‘Invest more’ in protected areas
Posted by Washington Post: Juliet Eilperin on February 24th, 2015
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