Arctic Sea Ice 'Melting Fast'

Arctic sea ice is melting even faster than last year, despite a cold winter. The year began with ice covering a larger area than at the beginning of 2007. But now it is down to levels seen last June, at the beginning of a summer that broke records for sea ice loss. Scientists say that much of the ice is so thin that it melts easily, and the Arctic may be ice-free in summer within five to 10 years.