The scorching heat wave that stifled Europe recently is now moving north, but it continues to set alarming records. Temperatures in Greenland are running 15 to 20 degrees Fahrenheit above average -- melting about 10 billion tons of ice into…
NASA-funded studies conducted last year found that sea ice present year-round in the Arctic is melting at a rate of 9 percent per decade, and in two recent summers, the ice was at record lows.
By PBS NewsHour
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