It’s a stark reminder of how climate change is reshaping entire ecosystems. Scientists' stunning observation of hybrid ...

Only about 50 Apennine brown bears remain in the wild, and new research sheds light on a key challenge to their survival. The ...

After a summer of fasting on land, the bears need to get back to their frozen home to hunt seals and bulk up. But their migration ritual is changing.

Arctic daily sea ice extent continued to hover near record daily lows in January, with the ice edge well northward of its long-term average position in most areas. In contrast to the cold conditions ...