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Working to make the promise reality

Sierra looks at electric vehicles that go the extra mile

Invading the Privacy of the People Who Make the Club Tick

Lookout-to-lookout mountain biking in Montana

Which is better for the environment: paper towels or hand dryers?

Make your own reusable shopping bag out of a broken umbrella

As activism goes digital, it also becomes more abstract. Ted Haviland and the Ozark Stream Teams stay focused on a place they can touch.

Although it's rarely paddled these days, the dehydrated Rio Grande can still hand out a drubbing.

Tom Wylie wants to change the way ocean researchers commute to work

Less than a mile from one of the busiest freeway intersections in the world, you're paddling amid sycamores, willows, grapevines, and egrets

Her newest book chronicles her lifelong love of all things leafy

Animate your Ak-Mak with these ecofriendly slathers

To run his coal trains, the billionaire investor needs to seize land from a bunch of Montana cowboys.

The moon bear's bile fuels a multimillion-dollar industry

!Xaus Lodge, Kgalagadi (Kalahari) Transfrontier Park, Northern Cape Province, South Africa

Despite their size, the manatees swim with a still, eerie grace