"The growth, the little bitty trees, it's amazing how it's come back," one park ranger said.
People didn't plant those millions of new trees. They're all the work of Mother Nature.
"She knows how to restore this place," the ranger said.
The return of Yellowstone is a reminder of how well nature can heal its wounds when people give it a chance.
From 'In The News' with CBS News Correspondent Dan Raviv. ©1998, CBS Worldwide Inc., All Rights Reserved