Climate Change

Parts per million (ppm) of CO2 in the atmosphere have now gone through the “safety” level of 400 ppm and continue to rise..

The last time mean global temperatures reached 2-3°C above present levels, some 3 million years ago – an event associated with CO2 levels of about 400 ppm – polar regions were heated by nearly 8°C, and sea levels had risen by 25 metres relative to the present.This represents near-total melting of Greenland and West Antarctica Ice Sheets

Atmospheric CO2

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