Athletes and scientists explore snowy endangered forests

Treeline is a beautiful documentary that looks at old growth forests around the world, interspersed with amazing footage of skiing and snowboarding:

Follow a group of skiers, snowboarders, scientists and healers to the birch forests of Japan, the red cedars of British Columbia and the bristlecones of Nevada, as they explore an ancient story written in rings.

Image: YouTube / Patagonia