The Polar Bear Could Become Extinct by 2100 The polar bear population could become extinct by 2100 due to climate change, according to research published in the journal Nature. Polar bears are spread across 19 distinct sub-populations in Canada, Alaska, Siberia, Svalbard Island, and Greenland. Their dwindling bodyweight undermines their chances of surviving Arctic winters without food. With temperatures warming twice as fast in the Arctic as the […] Brains Sebastian Opazo | July 24, 2020 4 Comments