Special | 26m 26s | Video has closed captioning.
Head into the high country of the Rocky Mountains to examine the imperiled whitebark pine and meet the people determined to save it. Forest managers face an uphill battle to restore it before it's too late. Meet tree climbers collecting cones in Canada's national parks and a University of Montana scientist whose promising discovery could help harness genetic resistance to save the tree.
Problems Playing Video? | Closed Captioning