Temperatures on Greenland haven't been this warm in at least 1,000 years, scientists report | CNN
After years of research on the Greenland ice sheet -- which CNN visited when the cores were drilled -- scientists have reported temperatures there have been the warmest in at least the past 1,000 years.
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The Greenland ice sheet is melting. By 2100 it will likely have added half a meter to global sea level all by itself.