The idea of being able to put a price on nature is dividing opinion, but the financial value of ‘ecosystem services’ is increasingly guiding policy.
In 1996, Prof Shahid Naeem was part of a team of researchers who set out to value the Earth. Specifically, they were trying to establish the dollar value of all of the “ecosystem services” the planet provides to humans every year. Around $33tn, they concluded, nearly double global GDP at the time.
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