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1 .This is Scientific American 60-Second Earth. I'm David Biello. Your minute begins now.
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2 .It's obvious.
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3 .Global efforts to combat climate change have failed.
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4 .International summits are full of hot air and greenhouse gas pollution continues to rise.
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5 .If a country bails on a climate commitment, they pay a price of, zero.
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6 .Turns out that's okay, at least according to game theory analyses by researchers at the University of Lisbon.
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7 .Their models suggest that punishment by global institutions has no effect.
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8 .They also say that global summits actually impede cooperation.
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9 .Now, in a new report, the researchers suggest that if punishment starts getting handed out at the local level, say city governments,
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10 .what emerges is a much more cooperative global regime for combating climate change.
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11 .The only other way for such collaboration to develop was for there to be a perception that the risks associated with climate change were devastating.
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12 .The report is in the journal Nature Climate Change.
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13 .That's not the case at present, despite the reality of the environmental, economic and health threats posed by global warming.
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14 .In fact, such threats are reminiscent of the risks associated with another crisis,the financial one,
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15 .as noted by the Organization of Economic Cooperation and Development.
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16 .Nevertheless, the math of how people play games suggests that successfully curbing carbon pollution will rely on the old adage: think globally… act locally.
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17 .Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.
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