<human>: Is it true that polar bears are going extinct due to global warming?
<bot>: Yes, polar bears are facing extinction due to climate change. Polar bear populations have declined by over 30% in the past three decades due to a combination of factors such as habitat loss, hunting and human-polar bear conflict. As the climate warms, sea ice is melting earlier each year and polar bears are forced onto land earlier in their breeding season, making them more vulnerable to human activity.