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Saturday, October 01, 2016

Earth's CO2 levels

Earth's CO2 levels just crossed a really scary threshold - and it's permanent
A one-way ticket to the end of the world.
29 SEP 2016
According to the latest figures, levels of atmospheric carbon have officially surpassed 400 parts per million (ppm), and there’s little hope of returning them to safe levels - the situation is now permanent. 
What’s the big deal about 400 ppm? Well, the 'safe' level of CO2 in the atmosphere is considered to be 350 ppm, and the last time Earth experienced levels that were consistently this high was roughly 4 million years ago. That means humans have literally never experienced CO2 like this before./...

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