WHITEHORSE—Outside, snow is falling on the steel-grey current of the Yukon River, but it's short-sleeves warm inside the fish hatchery that's been David Petkovich's main source of employment for ...

The contrast between the declining Western Arctic herd and the thriving Porcupine herd is correlated to different levels of ...

With heavily muscled bodies, skinny legs, and strong hooves that balloon to the size of dinner plates come winter, mountain caribou — the "mountain ecotype" of the woodland caribou — are well adapted ...