blumfield says we used to get a lot more of them, and they stuck around for weeks. > the fact that it h been 23 years since one likis happened is probably really strong evidence that the climate has changed and is changing. >> we're seeing this sort of as environmental distress or an emotional anxiety. >> reporter: researchers are looking at how people are responding to climate change. in duluth, cross country skiers are often challenged with less snow. >> one cative adaptation we've seen people do is turning to winter hiking, turning to fat- tire bicycle riding. 'sheat-tire bike tracks all over the place here where people are getting out on a bike. >> reporter: berry says, with the changes, there also comes a new anxiety-- loss of identity and even livelihood. g barks ) ter mcclelland finished 7th in the beargrease. now, it's ck to work, giving people a taste of winter's magic. but he says, somyears, it's been a scramble. >> one of the problems with this whole climate change in toyourism: when get a good winter, it's off everyone's radar screen. and then, we'll have two or three marg