This animation compares the 2005 annual Arctic minimum sea ice from 09/21/2005 (shown in orange) with the 2007 minimum sea ice from 09/14/2007. The average minimum sea ice from 1979 through 2007 is shown in green. Source: NASA Goddard Space Flight Center
arctic sea ice melt
At a meeting of the US Senate Committee on Commerce, Science and Transportation, Alaska's Senator Ted Stevens claimed that the unprecedented decline in Arctic sea ice melting is probably due to sunspots.
Of course, if a major plank in your political platform is the opening up of Arctic National Wildlife Refuge to oil exploration, you probably would be inclined to grasp at anything to discredit the human-induced theory of global warming as well.