dr. frank van manon, a leading bear scientist devoted to these majestic animals for nearly 30 years.said that we might encounter what? >> a bison on the road. >> reporter: and what do we have in front of us? this guy does not look worried to see us. he's coming straight for us. look at him. that was amazing. >> reporter: here the grizzlies' natural habitat. but just outside modern-day development. >> on one hand you have the park over here. and then you can hear -- there's a semi truck just barreling down the road. >> reporter: that area has changed a little bit over the last couple decades. >> armed with bear spray, we head to a clearing off the road. >> reporter: is it your civic responsibility to be bear wise? >> personally, yes, i would say so. most of these people don't want to see bears die because of getting into garbage. it only takes one house that doesn't have a bearproof garbage system, and that's all it takes for a bear to get in trouble. >> reporter: back at the center team hemmenway's getting ready to test five coolers. >> it doesn't seem that long, but when you're stan

dr. frank van manon, a leading bear scientist devoted to these majestic animals for nearly 30 years. you have said that we might encounter what? >> a bison on the road. >> reporter: and what do we have in front of us? this guy does not look worried to see us. he's coming straight for us. look at him. that was amazing. >> reporter: here the grizzlies' natural habitat. but just outside modern-day development. >> on one hand you have the park over here. and then you can hear -- there's a semi truck just barreling down the road. >> reporter: that area has changed a little bit over the last couple decades. >> armed with bear spray, we head to a clearing off the road. >> reporter: is it your civic responsibility to be bear wise? >> personally, yes, i would say so. most of these people don't want to see bears die because of getting into garbage. it only takes one house that doesn't have a bearproof garbage system, and that's all it takes for a bear to get in trouble. >> reporter: back at the center team hemmenway's getting ready to test five coolers. >> it doesn't seem that long, but when y

dr. frank van manon, a leading bear scientist devoted to these majestic animals for nearly