Gallery: Global Carbon Emissions Set to Hit Alarming 400 Parts Per Mill...

 

For the first time in up to five million years, the concentration of carbon dioxide in our atmosphere is about to reach 400 parts per million (ppm). Former NASA scientist James Hansen warned that levels over 350ppm would destabilize the earth’s climate, but now we have far exceeded that figure with a record-breaking weekly average of 398.5ppm recorded on Monday, The Guardian reports. Researchers at the Earth Systems Research Laboratory in Hawaii expect we will hit the 400ppm milestone in May, 2013.

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