Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
The volcano started with a phreatic eruption, which can be like a volcano clearing its throat before a normal eruption.
When trying to create jaw-dropping landscape photos, don't overlook this single most important step.
The U.S. is expanding a marine sanctuary near Hawaii to create Earth's largest no-take ocean preserve.
To protect wilderness, we have to define it. And that definition can be harder to discern than you might guess.
Moving invasive purple sea urchins helps to restore balance to the ecosystem.
These long-haul hikes, all longer than 1,000 miles, put you in touch with scenery, cultures and lifestyles that few get to see firsthand.
You might have heard of nocturnal and diurnal animals. But did you know animals like rabbits, house cats and deer are neither of these? Find out about when these species are actually active.
Well, perhaps a photo can suffice. Meditating on this image is sure to calm your nerves and make you sigh a peaceful sigh.
Bryan Pijanowski, a self-described 'soundscape ecologist,' has installed microphones around the world so he can capture the planet's noises.
Equal parts planning and dumb luck went into this photographer's magical capture of one of nature's most loved phenomena.
The world has 30 years to reverse the CO2 trend before global warming surpasses the 3.6 degrees Fahrenheit target set at the 2009 climate summit in Copenhagen.
It's hard not to feel a little more open, a little more hopeful, after reading this quote.
The impact winter forced trees to adapt quickly, but evergreens ended not being quick enough.
Creeks, brooks, streams, rivers... they are all riparian habitats, and they are hiding important secrets.
It's 'America's Favorite Drive' for a reason — there's no better place to catch a burst of seasonal color.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.