The Oak Stands Tall
Clip: Season 3 | 4m 46s
The Eastern United States' mightiest tree, the oak, is in decline, possibly due to over-harvesting or climate change. Whatever the cause, scientists are trying to find ways to reverse this decline. Watch U.S. Forest Service researchers use fire to give young oaks room to grow in the North Carolina mountains.
Aired: 04/03/16Video has closed captioning.