Hundreds of environmental activists prepare to march across the Brooklyn Bridge on the International Day for Climate Change
Hundreds of environmental activists prepare to march across the Brooklyn Bridge at a Greenpeace sponsored event on the International Day for Climate Change, Saturday, October 24, 2009. The International Day for Climate Change raises public awareness about global warming and the number "350", which they use as their slogan, corresponds to the amount of carbon dioxide emissions in parts per million in the atmosphere that would be a safe number to avoid global warming. Right now the number is hovering around 387ppm. (© Frances M. Roberts)
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Location: new york ny usa north america
Photo credit: © Frances Roberts / Alamy / Afripics
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