The National Park Service's principal climate scientist explains why the parks are important laboratories for climate change research, and how climate change is altering the parks.
As the National Park Service turns 100 years old, two conservation scholars and former park rangers respond to critics who support privatizing national parks or putting them under state control.
When we think of national parks, many people picture geysers or mountain peaks. But the park system also protects historic sites and objects that show how the U.S. has evolved into a diverse society.
A study estimates that Americans would pay $92 billion yearly in extra taxes to protect national parks. But the Trump Administration's budget calls for cuts.
The 1906 Antiquities Act gives presidents unilateral power to protect land as national monuments. The law has saved important places, but has also fueled intense conflicts over land control.
Rehydrating the Florida Everglades is the largest ecological restoration project in the world. Ecologist Peter Frederick explains why this massive effort is worth its multi-billion-dollar cost.
John Muir, born 178 years ago today, was one of America's first great conservation advocates. His letters and diaries convey the emotions Muir felt in Yosemite Valley, his 'sanctum sanctorum.'
Why do Americans revere the Grand Canyon? It taught us to look at nature in a new way, and to respect iconic places by leaving them alone.