Courtesy of National Park Service Another factor that can end the lives of big trees, of course, is logging. Many giant sequoias fell to the ax during the late 19th and early 20th centuries.

Next, take a walk along the Big Stump Loop ... from the towering trees of Redwood National Park to the unforgettable Muir Woods National Monument, full of the world's tallest tree species.

There are hundreds of miles of trails in Sequoia National ... is a big hit with visitors, who call it a beautiful, relatively easy walk. A shorter hike in Giant Forest, the Big Trees Trail ...

Here's everything you need to know before visiting Joshua Tree National Park. The area that is now ... you may get to see the Joshua trees bloom; come April, says Pettit, the wildflowers are ...

Cypress trees, including dwarf cypress ... This new oil exploration in Big Cypress National Preserve is the single most damaging energy development project happening inside a national park site ...

In the heart of California, the Sequoia and Kings Canyon National Parks are home to some of the tallest trees on the planet.