Scientists are observing an unprecedented level of melting in the arctic ice cap.  For the last four years the summer melt has been more and more extensive, and with each successive melting, the arctic grows warmer causing even more melting.

From Satellite Data Shows 'Stunning' Arctic Ice Retreat for 4th Straight Year (Voice of America News):

...Since 2002, U.S. satellite data have revealed unusual springtime melting in areas north of Siberia and Alaska. Now, the National Snow and Ice Data Center at the University of Colorado says the trend expanded this year to include the entire Arctic ice pack.

"What it's telling us is that the pace of retreat of ice in summer is accelerating," said snow and ice data center researcher Ted Scambos...

The cause?  Well according to these scientists, global warming brought on by overuse of fossil fuels.  So therefore, it's nothing to worry about, because as you know, Fox News files Global Warming under the heading "junk science".  Which is one of the many reasons I file Fox News under the heading "shit".

We're gonna need a bigger boat.