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CARBON CREEP: Suddenly, CO2 hits the 410ppm mark

Friday 21 Apr 17 11:00am

CHALK UP another climate milestone … atmospheric carbon dioxide concentrations hit 410 parts-per-million this week, the highest they’ve been in more than 15 million years.

The last time there was this much carbon dioxide in the atmosphere, global temperatures were 3deg to 6deg warmer and New Zealand was a very different place; inland Otago was dominated by a lake full of crocodiles and covered in Eucaplytus and other Australian forests.

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Related Topics: Greenhouse Effect | Latest science

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