Gracie the border collie brings a special skill set to Glacier National Park: keeping the wildlife living in the park safe from their visitors.
Despite what your eyes are telling you, it's not molten lava flowing from Yosemite National Park's Horsetail Fall in February.
Adventurer Mikah Meyer has visited many U.S. national parks and been struck by the extent to which Native American history is part of so many.
The U.S. National Park Service is marking its 100th anniversary by hosting more than 100 ceremonies to swear in new U.S. citizens.
With its largest expansion in nearly 70 years, Yosemite National Park gains wetlands, meadows and rolling hills that are a haven for endangered species.
Marine sanctuaries protect nature while allowing people to use the waters sustainably. On World Ocean Day, read about U.S. marine sanctuaries.
President Obama has expanded a national monument off the coast of Hawaii, creating a safe zone for tuna, sea turtles and thousands of other species.
President Obama is the first sitting U.S. president to project himself into virtual reality with a 360-degree representation of Yosemite National Park.
The National Park Service celebrated its 100th birthday with a living emblem made by people holding umbrellas in its colors on Washington's National Mall.