Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
The Gamburtsev mountains' peaks and ridges would be the continent's highest spot...if only their icy ceiling would melt.
Aerosols from volcanoes cool the Earth by blocking some solar radiation and reflecting it into space.
Hike to the Canyon District of Yellowstone National Park and you'll be in for a spectacular view.
Waterfalls come in all sorts of shapes and sizes. Test your knowledge of these natural wonders.
'Nova' special explains the devastating geological phenomenon and how we can prepare for it.
This unusual lake is already a surreal place to visit. But add to that a spectacular sunset and you have a set for a sci-fi movie.
The Nature Conservancy's Urban Water Blueprint details how natural conservation methods in key watershed areas can improve water quality in more than 500 global cities.
The glowing yellow leaves of an aspen grove left us wondering: Why are these trees so unique?
This arctic spot has many amazing features, but these five are what draw in travelers.
Learn about this gorgeous Norwegian time-lapse, which was almost 3 years in the making.
Have you always admired photos of our amazing galaxy? Well, it's getting easier and easier to capture them yourself!
Mountains don't really scowl and horses don't haunt interstellar space. Or do they?
With just a few flicks and twists of the wrist, the quarry chief directs the mining of huge blocks of beautiful Italian marble in a feat of industrial artistry.
Researchers will run DNA tests on the remains to determine if the skeletons were related.
The radioactive cesium has not been detected on beaches, and it has a brief half-life of two years which renders its danger to human and animal life fairly low.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.