Plas Newydd
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The National Trust mansion sucking heat from sea water

A National Trust mansions in Wales is making history with a new technology that sucks heat from sea water.

Plas Newydd in Anglesey will in future have its collection of military uniforms warmed by a heat pump.

It is the biggest UK scheme of its kind and shows a way in which buildings can be heated without imported gas or oil.

BBC environment analyst Roger Harrabin reports.

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