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Tag: carbon doxide

‘Dangerous Territory’: Carbon Dioxide Levels Reach Milestone

KQED Science | May 10, 2013 | 1 Comment

‘Dangerous Territory’: Carbon Dioxide Levels Reach Milestone

The amount of carbon dioxide in the Earth's atmosphere has reached 440 parts per million. It's the first time it's reached that number since scientists began tracking it. Actually, it's the first time it's reached that number in millions of years.

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