Permafrost’s ticking “carbon bomb” may never truly detonate

April 9, 2015 9:11 AM

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New research suggests that carbon stored in frozen soil will be released gradually.

Remember last year, when NASA scientists freaked out because the amount of carbon dioxide in the atmosphere reached the threshold of 400 parts per million for the first time in recorded history? It was a big deal, because carbon dioxide is a greenhouse gas and the more of it in the atmosphere, the h...

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