Quartz: Polar bears have been a face of climate change for years. We`ve long understood that the melting sea ice is drastically reducing their means of foraging for seals, their main food source. We even know that pollution puts their penile bone density at risk.
But now, scientists have identified another threat to polar bears: Summer ice melt.
Researchers from the University of Wyoming found (paywall) that polar bears aren`t able to adapt to low food supplies by reducing their metabolisms during...