GM owners with an OnStar-equipped vehicle can earn some extra cash by renting out their autos.

Avis acquires zipcar, but what does it really mean?

Save money and reduce your carbon footprint when you use one of these 7 apps to organize a carpool or book a carshare ride.

Enterprise is expanding its carsharing services despite a company executive’s dismissal of the need for a separate carsharing industry.

Uber and Lyft are both offering discounted ridesharing services. Today in San Francisco; tomorrow the world.

Helsinki is experimenting with a plan to match people with rides, making cars unnecessary.

Car2Go is now the world's largest service, with a million members and a new outpost in Brooklyn.

FlightCar leverages all those idle vehicles in the long-term lots, and it's a lifeline for frequent flyers.

A new report from KPMG sees 500 billion annual miles from people who might have otherwise stayed home.

Exciting new hybrids from Mitsubishi, Kia and Volvo are the talk of the Windy City.

The Detroit and New York auto shows may have the new car introductions, but Washington has the politicians.

Electric cars are really shooting off into the stratosphere, and it’s all Elon Musk can do to keep up.

Environmentalist Peter Bahouth shares the inspiration behind Atlanta's most leafy and lovely Airbnb listing.

Sky City was supposed to be 220 stories and this building was supposed to be 97 stories; but there's more to building than just technical innovation.

In a once iffy stretch of East Oakland, Tassafaronga Village stands as a model of affordable green housing done right.

Friggatto cleverly evades the exhausting, expensive process of securing a housing permit in Sweden.

Here are 10 historic shopping centers that are still thriving today.

Heatherwick Studio's mighty pretty design for Maggie's Centre Yorkshire resembles a cluster of massive potted plants.

James Furzer's simple design is still situated on the streets — yet lifted slightly above them.

University of Cincinnati students score big in the 2015 perFORM Building Design Competition.

Developers behind the 104-acre sustainable project in Belize promise to consider all concerns ahead of construction in 2017.

The Design Museum's recognition of IKEA's Better Shelter for refugees couldn't come at a more appropriate time.

M.A.Di., a flat-pack tiny house from Italy, is a new take on a beloved classic.

A 'clunker' is a vehicle reaching less than 18 mpg. Check out the top 10 clunkiest clunkers here.

It was one of President Obama's signature stimulus programs, and it looked like a roaring success — at the time.

Habitat loss and climate change have pushed the antechinus, a marsupial that looks like a small shrew, to the brink. And their sex lives don't help.

It's a wild idea fraught with controversy, but Australia has the habitats and the protections in place to harbor these beasts.

Rescuers in Cape Cod are racing to save wave after wave of "cold-stunned" sea turtles.

U.S. Fish & Wildlife Service proposes letting states, tribes manage wolf populations, dropping endangered species status on the federal level.

A last minute holiday gift for socially conscious tooth-cleaners with an eye for ecological design, Bogobrush follows a "buy one give one" business model.

Bring the great outdoors into your home with Three Bad Seeds' line of wilderness-inspired pillows handcrafted from repurposed scrap fabrics.

From the venerable, eco-conscious publisher comes a new place to find great gifts, fairly made jewelry and sustainable fashion.

After you read the last page of this new book for kids, you can start a discussion about food, farmers and eating.

From animal welfare to marine protection to climate change, these environmental charities are sure to put your money to good use.

They make the perfect gift for your favorite binge-watcher.

DoneGood's browser extension and app let you shop for socially responsible alternatives to whatever you're looking for.

Shop for Good Sunday lets you put your holiday spending where your values are.

Blind brothers ask you to take a leap of faith to help find a cure for blindness.

If you're doling out gift cards for Christmas, you might as well just give out cash.

You haven't lived until you've seen one of these babies clear 14 cars and leap 130 feet in the air. An hour of action uses up half Kuwait's daily oil output, bu

A dozen senators are asking the Departments of Interior and Energy to get the event back on the mall.

During an Energy and Natural Resources Committee hearing, the secretary of the Interior outlines the Obama administration's energy wish list.

Offshore wind power poses no major environmental or socioeconomic risks for the U.S. Mid-Atlantic coast, a new Interior Department study reports.

Oil exploration will probably begin in Alaskan waters this summer, according to a top U.S. official, with more lease sales likely in the next four years.

A new Gallup poll shows more Americans are concerned about the economy than the environment. Peter Dykstra parses the details.

Cash for Clunkers tore through our nation like a drag racer, long before anybody could figure out if it made sense. But its image is already locked in the popul

Global warming science is under attack as never before, and these raiders are in the vanguard.

If Democrats want to make this election about issues, they should make it a mandate on Rand Paul's ideas not George Bush's failures.

A trio of nations -- Austria, Sweden and Finland -- are pushing once again for loophole in the climate treaty that would allow them to get paid to cut down tree

Idaho's Mike Simpson actually sounds reasonable when bringing up the debates of the past.