Study: Forests absorb much more greenhouse gas than previously known

Worldwide, forests absorb almost 9 billion tons of the greenhouse gas carbon dioxide every year, according to a new study published Thursday in the journal Science.

Want to save the planet? Plant a tree.

Or maybe a lot of them. Or maybe don't cut down so many.

These are the implications of a new study, which found that the world's forests play an unexpectedly large role in climate change, vacuuming up the greenhouse gas carbon dioxide (CO2) and storing the carbon in wood, according to research published online Thursday by the journal Science.

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