‘Scary’ climate message from past

November 12, 2009 • Daily Email Recap

Thanks to Linn Harwell for this article from BBC News.

A new historical record of carbon dioxide levels suggests current political targets on climate may be “playing with fire”, scientists say.

Researchers used ocean sediments to plot CO2 levels back 20 million years.

Levels similar to those now commonly regarded as adequate to tackle climate change were associated with sea levels 25-40m (80-130 ft) higher than today.

Scientists write in the journal Science that this extends knowledge of the link between CO2 and climate back in time.

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