Rare white grizzly bear, 2 cubs killed hours apart by cars in Canada

Read MoreThe rare white grizzly was startled by a train and ran in front of oncoming traffic, hours after her two cubs were killed on the same highway, Parks Canada officials said on Tuesday.The rare white grizzly was startled by a train and ran in front of oncoming traffic, hours after her two cubs were killed on the same highway, Parks Canada officials said on Tuesday.