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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 .Consider the carbon.
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3 .If you fly to the People's Climate March in New York City September 21st, then you're spewing copious carbon dioxide into the atmosphere.
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4 .Same is true if you're driving or even taking the train, though far less of course.
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5 .So the People's Climate March itself won't lower the amount of CO2 pollution in the atmosphere.
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6 .But the sight of thousands of people at the march, including Secretary General of the United Nations Ban-ki Moon might help convince world leaders that the fight against climate change has popular support.
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7 .And more than 125 such leaders, including President Obama, are expected at the Secretary General's climate summit this week.
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8 .The good news is that there are steps to take that we know work to combat climate change.
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9 .Whether that be international treaties like the Montreal Protocol or replacing fossil fuel burning with renewable power or even nuclear,
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10 .there are policies that work if world leaders have the courage to adopt them.
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11 .So if all those marchers can convince world leaders to take action, then their one-time CO2 output will be worth it.
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12 .Your minute is up, for Scientific American 60-Second Earth. I'm David Biello.
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