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Carbon dioxide not the only climate enemy http://apocadocs.com/s.pl?1259594955
By quickly arresting soot, methane, low-level ozone and hydrofluorocarbons, the researchers said the world can delay climate change by roughly 40 years -- enough time to significantly trim emissions of carbon dioxide.
So-called fast-action strategies generally rely on available technologies so that they can be launched in two or three years with relatively little cost, according to advocates for that approach.
They said trimming potent lesser-known pollutants will produce results in a matter of decades while carbon-dioxide remain in the atmosphere for centuries even after emissions stop. Many scientists say it's important to avoid raising the world temperature by 3.6 degrees Fahrenheit above preindustrial levels, a "tipping point" at which they predict major irreversible problems such as disappearing ice sheets.
"As important as the CO2 side is, it's not enough to save us from irreversible and catastrophic changes," said Durwood Zaelke, a sustainable development expert at UC Santa Barbara. "We need these fast-action strategies to put the brakes on."
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[Read more stories about:
tipping point, airborne pollutants, smart policy]
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