Humanity has only a handful of decades to avoid a devastating ‘Hothouse Earth’

Published on Aug 15, 2018
PBS NewsHour

A study published in the Proceeding of the National Academy of Sciences tells a tale of two Earths. In one, humans are able to rein in global warming, and in the other, temperatures would be irreversibly warmer than pre-industrial levels, by 4 to 5 degrees Celsius. How societies act in the next few decades could determine the trajectory of our planet.

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