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July 8 2013

Earthworms could help scientists 'dig' into past climates


A team of UK researchers believe earthworms could provide a window into past climates, allowing scientists to piece together the prevailing weather conditions thousands of years ago.

A laboratory study by researchers from the Universities of Reading and York has demonstrated that balls of calcium carbonate (small lumps of chalk-like material) excreted by the earthworm Lumbricus terrestris commonly known as lobworms or nightcrawlers - maintain a memory of the temperature at which they were formed.

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