A series of ecological initiatives, including the eradication of several invasive species, has dramatically revived the life and landscape of this remote sub-Antarctic island.
The Trump administration is reversing a longstanding ban on oil exploration on the coastal plain of the Arctic National Wildlife Refuge. The area is home to about 900 polar bears. Can they withstand another disruption?
A new study that tracked polar bears on sea ice off Alaska found that they’re fat-burning machines. That means when food is hard to find, they lose weight fast.
