Sources

Blake Hounshell: Smart piece on Rio+20 by Bruce Jones http://t.co/94FhZCgv

All News on 'The Twitter Times: felixsalmon': Dancing on the Sand - By Bruce Jones | Foreign Policy

felix salmon: RT @FP_Magazine: Why did the environmental movement send 40, 000 people to a failed summit in Rio? http://t.co/URCUdF5V

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