National parks in the United States are revered for their natural beauty and wildlife. They are fragile ecosystems that are cared for and preserved for future generations. Because of their fragile nature, they are also places where scientists are beginning to see the effects of climate change or global warming. VOA's Jeff Swicord reports from Glacier National Park in the Western state of Montana. Since the early 20th century, Montana's Glacier National Park has attracted visitors to the majestic beauty of its peaks and valleys....
photo: Public Domain file
