from The Burning Platform:
The non-binding climate deal which the US and China just signed will allow the Earth’s atmospheric carbon dioxide concentration to go to 500ppm and beyond by the end of the century, far past the current concentration of 400ppm. Historically, this concentration was sufficient to produce an ice-free Arctic, significantly higher ocean levels, and an environment unlikely to be able to sustain large human populations.
According to a November 2011 study published in Science, “On our current emissions path, CO2 levels in 2100 will hit levels last seen when the Earth was 29°F (16°C) hotter.” Scientists participating in the IPCC have warned that just a 4ºC rise will mean that “people won’t be able to cope, let alone work productively, in the hottest parts of the year.”
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