Polar bears filmed themselves while hunting seals on sea ice, revealing why they are so at risk from global warming

Click to watch a video captured by a point-of-view camera attached to a female polar bear by scientists studying polar bear behavior and feeding rates. (Video credit: Anthony Pagano, USGS) As with our planet as a whole, if you want to know the fate of polar bears in a warming world, you need to follow the energy. For the planet, researchers have been doing just that by keeping track of how carbon dioxide and other greenhouse gases we emit into the atmosphere have been tipping the climate's energy balance toward more and more warming. And the high north where polar bears live has warmed faster than any other region on Earth, resulting in shrinking sea ice and a cascade of other environmental impacts. Among those impacts: pressure on populations of polar bears. These majestic animals use sea ice as a platform from which to hunt their fatty, energy-dense prey: seals. ...