A pile of Russian thistle, or tumbleweeds, tangled up under a stand of western Joshua trees on the Transition Habitat ...

Have you ever looked at a mountain and wondered why there were trees on one side but none on the other? Or noticed different ...

Trees, water, and mountains at Farragut State Park© Angela Montana/Shutterstock A serene section of Idaho's Lake Pend Oreille© Kirk Fisher/Getty Images ...

The Great Smoky Mountains National Park is a major North American refuge of temperate zone flora and fauna that survived the Pleistocene glaciations. The park includes the largest remnant of the ...

Dan Parker has spent four decades cultivating a clientele for his select and expensive trees. This is one job he says he'll never quit.

2.A headlamp to light your path in case you have to use the restroom in the middle of the night or on your way down from the mountain after watching the sunset. 3. A portable shower you can warm with ...