Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
Some of the best places are found off the beaten path, so grab a compass and a map and learn how to navigate your way through the woods.
There are many beautiful slot canyons in the Southwest, but Antelope Canyon is one of the most famous — and for a good reason.
Michigan photographer Vincent Brady offers a stirring time-lapse tribute to the unpolluted night sky — all 360 degrees of it.
Do you know when dinosaurs existed, or which one was the biggest? Find out how much you know about these prehistoric creatures.
Take a look at some of the world's most stunning slot canyons, a list that will make you want to pack your hiking gear.
Is it possible to resist taking such a trail, canopied by verdant branches and leading into a quiet, peaceful woods?
Covering some 500 million acres of ocean, the expanded marine sanctuary would be four times larger than California.
This little pond looks like something right out of a fairytale, complete with white fluffy clouds reflecting across its surface.
Scientists studied and analyzed a meteorite sample for five years to determine its crystal and chemical properties.
Mono Lake is one of the strangest bodies of water on the planet.
You can practically hear the babbling of the water rushing over the rocks when you look at this meditative photograph.
This unusual sandstone rock formation looks more like a surrealist painting than an actual place. It's one travel destination you definitely want on your bucket list.
Members of a bachelor party at Elephant Butte Lake in New Mexico stumbled upon an item sticking a few inches out of the ground — and that's when the fun began. [Video]
A U.K. oil giant has agreed to leave Africa's Virunga National Park, home to 25 percent of Earth's mountain gorillas.
The extra melt caused by subglacial volcanoes could lubricate the ice sheet from beneath, speeding up the flow of water back into the sea.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.