Beyond April 19, additional fee-free days are scheduled for later in the year, including June 19 (Juneteenth), August 4 ...

Learn all about the best national parks in the US and find your next destination for outdoor activities, especially hiking.

Creeks, streams, and rivers provide a sense of place, a grounding at times, an identity for surrounding communities. They ...

I visited all the major US national parks and ranked them based on factors like beauty and crowd size. My favorites include Grand Teton and Acadia.

America's national parks are warming much faster than the rest ... You can see the entire list of the 25 busiest national parks and increases in hot days in their Climate Matters post.

National Parks Adventure—told from the perspective ... and who has been active in dozens of conservation campaigns—was not the first American to be claimed by that high granite Yosemite ...

A 26-year-old federal regulation known as the regional haze rule has helped cut down on pollution over national parks, wilderness ... promise that was made to the American public is lost ...

A 26-year-old federal regulation known as the regional haze rule has helped cut down on pollution over national parks, wilderness ... promise that was made to the American public is lost ...