Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
The walls of these giant circles were too low to function as animal corrals, and scientists don't see why a corral would need such a precise shape.
An aluminum shard that may've come from a window patch on Earhart's aircraft has prompted the renewed interest in the lost pilot.
As waves roll into shore, the edges are often foamy -- sometimes so much so that foam blows off the water and down the beach. Here's why it happens.
Divers scoured remote Pacific atolls to collect the garbage, some of which had entangled sea turtles.
The bright blue contrasts beautifully with the red rocks over which the waters tumble. Here's how it gets that hue.
It sounds like a dangerous idea, but by thawing out ancient viruses scientists hope to learn more about their evolution.
In addition to the rapidly flowing lava, methane explosions have been observed as pockets of trapped gas from decomposing plants come in contact with the lava.
It's no secret that spending time in nature has immense health benefits. Learn more about shinrin-yoku, which means 'forest bathing' in Japanese.
For many residents of Los Angeles County, the new San Gabriel National Monument may be the only easily accessible open space even remotely close to home.
University of Michigan officials discover the complicated answer as they relocate a 250-year-old bur oak.
Ice and water and dissolved the book's binding, so researched made digital copies of the pages and then created a new binding for the diary.
New film documents the environmental and personal damage caused by the 2010 disaster.
Researchers found hundreds of ancient tools, including spear points and axes, along with a range of animal bones in what may've been an open-air workshop.
Most likely you're starting to see hay bales and pumpkins popping up right and left as we celebrate the most iconic aspects of the autumn season.
Whether you're planning to camp overnight or hike for only a few hours, make sure you're prepared before you hit the trail.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.