Clearing the air on fossil fuel pollution

Rapidly reducing greenhouse gas emissions is critical to avoiding increasing climate change impacts. Doing so won't immediately stop the world from heating, but it will improve life quickly. Because gases such as carbon dioxide, methane and nitrous oxide remain in the atmosphere for varying lengths of time (CO2 for 300 to 1,000 years, methane and nitrous oxide for far less time), temperatures will rise even after we've stopped pumping them into the atmosphere.

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