Wildlife officials typically tell Yukoners to keep an eye out for bears coming out of hibernation in April. 'We don't generally get sightings reported this time of year.'

Reindeer are thought to face a grim future as climate change threatens lichen, a key winter food source. But on one Alaskan island, reindeer have found a new food source, making scientists hopeful.

In Finland nothing means spring is around the corner more in the south than news that the brown bears at Helsinkis Korkeasaari Zoo have woken from their winters sleep. Zoo employees say the 16 and 11-year-old females hibernation is increasingly cut shorter as the years pass.

The size of a large caribou herd in Alaska's Arctic region has dropped by more 50 percent over the last three years, and researchers who have tentatively ruled out hunting and predation as significant factors for the decline are trying to determine why.

The size of a large caribou herd in Alaska's Arctic region has dropped by more 50 percent over the last three years, and researchers who have tentatively ruled out hunting and predation as significant factors for the decline are trying to determine why.

As lichen has disappeared, the herd has changed its diet. This adaptation could have global implications for reindeer facing a warming climate.

The Yukon Fish and Game Association executive director believes it's just a matter of time before a disease outbreak, such as pneumonia, could spread from domestic sheep to wild Dall sheep.