"Climate change is a threat to the health of people, not just polar bears."
Evidently ,the polar bears are doing just fine.
"Global polar bear population size is about 26,000 (20,000-32,000), despite PBSG waffling"
see:polarbearscience.com/2015/05/31/global-polar-bear-population-size-is-about-26000-20000-32000-despite-pbsg-waffling/