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Greenland
Icepod tracks changes in the ice sheet
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Underwater cemetery
Sleep with the fishes
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Keystone XL
US Department of Interior criticises State
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In pictures
Yosemite national park wildfire
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Marine life
Measles-like virus linked to dolphin deaths
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Gas isn't the bogeyman
The official secrecy around the badger cull is anti-democratic
Patrick Barkham: Defra and Natural England monitors are silent about the culling – so how can we be sure it is being carried out properly?
Why a watermelon tells you what's wrong with the climate debate
How fracking can work in Britain
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