The FT's Leslie Hook talks to leading economists, business leaders, asset managers and ecologists to redefine the value humanity puts on Earth's natural resources. See if you get the FT for free as a student (http://ft.com/schoolsarefree) or start a £1 trial: https://subs.ft.com/spa3_trial?segmentId=3d4ba81b-96bb-cef0-9ece-29efd6ef2132
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