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Plants discovered buried deep beneath the ground indicate Greenland was once ice-free (www.sciencefocus.com)

Long-lost ice core provides direct evidence of a massive ice melt during a period of warmer weather less than one million years ago.

Russia and China say anyone will be able to use their south pole Moon base for 'peaceful' science and exploration (www.theregister.com)

How much land does it take to power the world?