Alaska Guessing Game Provides Climate Change Record

Judah (left) and Josh Ridgeway drill a hole in the Tanana River at Nenana, Alaska to measure the thickness of the ice on April 13th.

Months behind the rest of the country, spring is advancing across Alaska. And a contest that has residents guess the date of river ice breakup is showing a trend toward earlier and earlier melt.

(Image credit: Dan Bross/KUAC)