It's time for a road trip! From Washington, D.C., to San Francisco, you can visit all the best national parks in the U.S.

From the adorable but deadly pine marten to the massive sperm whale, get to know some of the amazing animals that call ...

The EPA estimates that between 2007 and 2018 the rule has cut 500,000 tons of sulfur dioxide and 300,000 tons of nitrous ...

In a warming world, our nation's national parks are warming even faster, and it's not just in summer. Here's what that could mean for your travel plans in the future, from the Arctic to the Desert ...

National Park Week is coming April 19, offering visitors a chance to see some of the treasured U.S. landmarks for free.

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

The park service has lost somewhere near 1,500 permanent employees since the beginning of this year, according to the Association of National Park Rangers.