ftc norman mclane made there blackfoot famous in "a river runs through it." , are concerned about climbedn influences, in this, wild country, it may be that science needs to save the day. global warming is putting the state fish, the west slope cutthroat trout, in danger. >> all right, we're going to need the fisher and all the pit-tagging equipment. >> clint mofelt monitors the rivers for the u.s. geological survey. they're looking for solutions. >> this area's actually warming at two to three times the global average. the worst cares scenario would be that the rivers, dry up, warm up too much to the point where trout can't inhabit these waters anymore. nothing like sampling trout in montana. >> mosel and his teamwork the glacier nationality park. >> this is climate poster child of north america. as temperature starts warming, we actually see fish moving up the mountain sides. >> that means the trowt trout me to cooler waters. >> this should be a good day. we go into small streams and we use a back tack electrofisher. there's one right there , cutthroat. chaka kahn we're on. >> what are