The Arctic Sea Ice Melt Season Is Getting Longer

A new study by NASA the National Snow and Ice Data Center indicates that the Arctic "melt season"--the time of the year when temperatures are warm enough for ice to melt--is getting longer all the time. There's a lot of variation from season to season, but the overall trend is clear: The melting season has been increasing about five days every decade since 1979. The time of first melting is getting earlier in the spring, and the time of refreezing getting later in the fall. This trend is bad, an...