Gracie the border collie brings a special skill set to Glacier National Park: keeping the wildlife living in the park safe from their visitors.
Can't travel to these five national parks right now? Through a National Park Service partnership with Google, anyone can enjoy nature from their home.
Although not well-known, all eight species of pangolins are threatened by wildlife traffickers who falsely sell the animals' scales as medicine.
The ocean ecosystem regulates climate, produces oxygen, and feeds about three billion people. But our oceans may not be able to provide these benefits much longer.
Climate scientists are in nearly unanimous agreement that the Earth’s atmosphere is getting warmer and will affect the way people around the world live.
The United States is sending firefighters and wildfire specialists to Australia to help fight the fires that have already consumed millions of hectares.
Over the past few decades, Los Angeles has learned techniques to improve air quality that could benefit other major cities around the world.
The ocean has absorbed 93 percent of the heat from global warming since the 1970s, scientists conclude in a new report that calls for worldwide action.
The San Francisco Bay island of Alcatraz, formerly a high-security prison, is now a tourist destination with its own renewable-energy system.