The bears have not lost weight over the past 20 years in the Norwegian archipelago, despite the region's accelerating warming. Among the reasons: They hunt prey other than seals, such as reindeer and birds.

Scientists think that Svalbard bears have adapted to recent ice loss by eating more land-based prey.

The bears have not lost weight over the past 20 years in the Norwegian archipelago, despite the region's accelerating warming. Among the reasons: They hunt prey other than seals,…