Polar Bear Denning in a Changing World
Category: ENVIRONMENT
We see the effects of a warming world manifest in many aspects of polar bears' life cycle from reduced numbers to shrinking body sizes, from smaller litters of cubs to altered movement patterns. Like a vet studying a sick animal, we see many problems in the world of polar bears today.
By Dr. Tom Smith, Contributor
Professor, Research Wildlife Biologist, Brigham Young University, 2012-11-17