Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
As many as 419 manatees have been found dead since Jan. 1, the highest number on record for a calendar year.
Here's how they're connected: Red knots feast on horseshoe crab eggs in Delaware Bay before flying 10,000 miles. Now, spawning and migration are not always synching up correctly. Is climate change to blame?
We're proud of our first year, and we'd like to share our most-viewed and remarked-upon articles of the year.
National parks comprise more than 84 million acres in the United States. Here are a few highlights.
Researchers discover that these tiny bats use wet adhesion to stick to surfaces.
Former home of the famous Mustang Ranch brothel is now being returned to its natural state ... and the ladies of the brothel don't have to worry about floodwaters rising at inopportune times.
Two sea lions were sentenced to death for preying on endangered salmon. But they got a reprieve from a Chicago aquarium they now call home.
Puget Sound under threat of a megathrust earthquake which occurs only once every 500 years.
Video: Chuck Leavell, keyboardist for The Rolling Stones and the cofounder of MNN, takes a tour of the Okefenokee National Wildlife Refuge.
Study shows monkeys on the Ivory Coast use syntax in their alert calls.
A reward of $2,500 is offered for information about bird shot in western Indiana.
Future Planet Green hosts and current elementary schoolers Sophia and Julie talk about why we should recycle.
In which the author looks ahead to a long Maine winter of getting around on two wheels.
Video: Tourists are shocked to see an adult polar bear kill and eat a cub. Experts say bear cannibalism is becoming more common because of changes in the food supply.
Video: Freezing temperatures have gripped much of the nation. The Weather Channel's Paul Goodloe reports
Eco-entrepreneur on politics, energy and Earth's resources.
Russell blogs about the day's top science and eco-news.