Of the Alaska Highway's 1,520 miles, 567 go through Yukon Territory. This stretch, about 200 miles from the U.S. border, is east of Haines Junction, Yukon. (Alan Solomon/Chicago Tribune/TNS)
“Snowfall before the Industrial Revolution averaged about eight feet of fresh snow a year at this site, and now we get over 18 feet of fresh snow,” Osterberg said.
“We can say confidently that the amount of snowfall we see today has never been seen previously during that whole 1,200-year record,” Osterberg said. “That we are way outside the range of what was natural conditions before the Industrial Revolution.”