Has the canary in the coal mine died--of frostbite?

Nenana Ice Classic: Ice now 60% thicker than it was five years ago

[2009] 9-Mar 45 Inches
[2004] 9-Mar 28.0 Inches

2008: Scientific measurements of Alaska's thaw rely on betting pool - Physics Today News Picks

"The Nenana Ice Classic is a pretty good proxy for climate change in the 20th century," Dr. Jeffries said.