Talk show host will spotlight how she and 378 staffers went vegan for a week.

Obama and Jintao announce sweeping clean energy 'cooperation plan' that could significantly reduce global greenhouse gas emissions.

British Airways partners with an American biofuel firm to build a massive facility outside of London that will produce garbage-based jet fuel.

IKEA gusts into the U.S. wind energy sector with an investment in an Illinois farm capable of generating enough annual energy to power 70 stores.

Ortho's decision to nix neonicotinoids is an important one.

Made of plastic and metal, it harms our oceans just like microbeads.

This week marks a somber time for NASA, with the anniversaries of three U.S. spaceflight disasters.

Go ahead and drink wine from a can this summer, but remember: It's not fine wine; it's fun wine.

On the one-year anniversary of the Deepwater Horizon oil spill in the Gulf of Mexico, Louisiana Governor Bobby Jindal tells TODAY that there's still work to be

Fans of Mother Nature Network's Facebook page can win a box full of green, limited-edition Ball® canning jars and much more.

The 2014 farm bill removed some of the barriers to growing hemp. Humboldt Distillery ran with it.

GE Ecomagination contest hopes to solicit the smartest solutions for a much-needed quantum leap in electrical grid technology.

Counterfeit certification labels on household electronics are a safety issue not to be ignored.

During a live webcast, Walmart reveals its new global sustainable agriculture goals.

Some professors are doing it, but perhaps they should look in the mirror.

The Vermont-based premium ice cream company is making the commitment to get 100% of all possible ingredients from Fair Trade sources by the end of 2013.

More than just the seafood is local at this Maryland waterfront restaurant.

You're bound to find something that piques your interest in this list of distinguished nominees for the top food awards.

The tongue-in-cheek campaign, courtesy of 350.org, proposes naming storms after climate change deniers.

The software giant is expected to unveil its first tablet computer.

Here's everything you need to know to get started in the world of legal marijuana — from investing to fundraising to finding a job.

If you're an app developer, check out the Environmental Protection Agency's new Apps for the Environment challenge.

The chemical’s makers can’t guarantee Diphenylamine's safety, so the EU doesn't allow its use. Here in the U.S. it’s found on 80 percent of conventional apples.

NASA Administrator Charles Bolden says the agency's current goal of getting astronauts to Mars in the 2030s is eminently achievable

Eco at the Oscars, TV dogs, elephants and 'Sharks'.

Global warming will march on regardless, argues writer Sami Grover. Maybe it's time to get more ambitious in our response.

President Barack Obama will announce a comprehensive plan to reduce greenhouse gas emissions in a highly anticipated speech today.

Turns out a Granny Smith apple a day may help you drop pounds as well as fight disease, according to research.

Babies born via scheduled C-section were more likely to develop asthma and diabetes.

Movie star Darryl Hannah and NASA scientist Dr. James Hansen were arrested along with dozens of others after blocking access to a coal facility.

The BuildingGreen Top 10 Green Building Products were announced at Greenbuild 2011.

In observation of one of the original New Urbanist-style planned communities' 75th anniversary, Norris, Tenn. gets a self-sufficient prefab demo home.

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

Despite the recall woes plaguing Toyota, Kelley Blue Book has named the Toyota Prius as the top green car for 2010.

What do Michael Pollan, Marc Morano, Lisa P. Jackson, nuclear energy and the climate have in common?

Ethanol has big fans in Hollywood. Can you believe the Kill Bill Trans-Am running on biofuel? Plus: We get a video tour of Begley's garage.

Singer-songwriter, in collaboration with G-Star Raw, will create jeans made from plastic-based 'bionic yarn'.

The medical cannabis market is rapidly expanding as more and more states rewrite their laws to give sick people access to the controversial medicine. Meet Troy

When we heard about Food52's Holiday Recipes and Party Planning Guide ($3.99 for iPad and iPhone), we thought this app from New York Times writers Amanda Hesser

The Every Kid in a Park initiative aims to get kids active and outdoors, but it may also turn them into environmental stewards.

Grist's David Roberts thinks Annie Leonard doesn't really understand the real Story of Cap & Trade.

The latest Republican to seek the presidency has a clear environmental record.

As Earth Day nears, MNN follows a 48-mile sweep of Atlanta's Chattahoochee River to shed light on the rising relevance of crowd-sourced conservation.

Covering thousands of miles on three-inch wings, the common green darner dragonfly completes a multi-generation journey every year.

Toyota's 2011 North American Environmental Report shows progress towards meeting the automaker's five-year goals.

50 years after man first walked on the moon, the ripples of that accomplishment continue to inspire innovation.

Miss the smells of home? Artist Kirill Rudenko is canning air from many of the world's major cities and selling it for 10 dollars a pop.

Our food system is broken and a smart scanner is not going to fix it.

Chevrolet will be bringing its clean diesel technology to the domestic Cruze lineup.

'Hidden Gems' calendar is offered as a free download to commemorate the stunning accomplishments of the famed space telescope.