Rate of carbon emissions put in context

  • 21 March 2016
Image copyright JAMES ZACHOS
Deep-sea sediments from 55.5 million years ago. The red clay band marks the onset of the PETM

We are now putting carbon into the atmosphere at a rate unprecedented since at least the age of the dinosaurs, scientists say.

The researchers have examined ocean sediments laid down during the so-called Palaeocene-Eocene Thermal Maximum - a dramatic warming event some 56 million years ago.

They find the amount of CO2 going into the air at its onset was four billion tonnes a year at most.

Today's figure is 10 times as big.

[whole BBC article]

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