Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
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.
You can't address human trafficking unless you also target the underlying problem of resource depletion, say UC Berkeley researchers.
Still not for the faint of heart, Hua Shan, one of the steepest mountains in Asia, is now safer to climb.
Spinosaurus is the only known dinosaur adapted to living almost entirely in the water.
The ancient flying reptile known as the pterosaur may have stored food in a throat pouch like a pelican.
Take a tour of the world's most fiery destinations, many of which have been burning continuously for decades, even centuries.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.