Polar bears' DNA adapts to Arctic warming

Polar bears are undergoing rapid genetic changes as a desperate attempt to adapt to the accelerating Arctic warming caused by climate change. Scientists discovered that "jumping genes" in polar bear DNA show increased activity in warmer regions, potentially altering metabolism and heat stress response, suggesting a survival mechanism against shrinking sea ice. While this genetic adaptability offers a glimmer of hope, researchers emphasize that it does not negate the urgent need to reduce global carbon emissions to slow temperature rise and prevent extinction.