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The world’s wetlands, threatened by development, dehydration and climate change, could release a planet-warming “carbon bomb” if they are destroyed, ecological scientists said on Sunday.
Wetlands contain 771 billion tons of greenhouse gases, one-fifth of all the carbon on Earth and about the same amount of carbon as is now in the atmosphere, the scientists said [...]

Twenty years ago, U.S scientist, James Hansen testified before a Senate committee and told lawmakers that “the greenhouse effect has been detected, and it is changing our climate now.”
On Monday, James Hansen, the director of NASA’s Goddard Institute for Space Studies, said at a congressional briefing that a carbon tax would be the most efficient [...]