Antarctic ice core
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CO2 linked to end of last ice age

Scientists have produced a detailed record of past climate change which provides compelling evidence that the last ice age was ended by a rise in temperature driven by an increase in atmospheric carbon dioxide.

The finding is based on a very broad range of data, including even the shells of ancient tiny ocean animals.

It has been reported in Nature journal.

Prof Eric Wolff from the British Antarctic Survey, who was not connected with the study, describes how this type of information is retrieved from cores of ice drilled from the Antarctic ice sheet.

  • 04 Apr 2012