Twenty years on from the original 1992 United Nations Earth Summit, Rio was bustling with an additional 40,000 to 50,000 people attending either the official UN Rio+20 summit.
Source: The Conversation
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Rio+20 and chronic diseases: a glass half-empty or half-full?
Submitted by bruna.nania on Fri, 06/29/2012 - 17:00
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