Four astronauts are spending 12 days underwater to prepare new methods for working in outer space. And they're Tweeting about it.

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

NASA lost power on Sunday in California, delaying the launch of the IRIS sun observatory by one day.

A miniature space farm, robot legs, and microbes collected by cheerleaders are just a few of the odd passengers headed to the International Space Station.

Temperature records across the continent continue to fall as Europe buckles under heat wave. At least seven deaths have been attributed to the heat.

The annual Bonnaroo Music Festival in Tennessee is the first to install a permanent solar installation to reduce its environmental footprint.

Kitschy nostalgia and clean-tech collide along Route 66, America's Mother Road, thanks to Solar Roadways.

At the 85th Annual Meeting of the United States Conference of Mayors in Miami Beach, leaders pledge to make the switch to 100% renewable energy by 2035.

In the wake of Hurricane Maria, Puerto Rico may turn to Tesla turning disaster into an opportunity to avoid future blackouts.

Eco-conscious Dutch poultry company Kipster wants to revolutionize the egg industry.

Heritage rail and clean tech collide in the Aussie beach town of Byron Bay with the introduction of a solar panel-topped vintage train.

Following a protracted court battle, Six Flags Great Adventure is set to become the world's first theme park that's fully powered by the sun.

Is responsible seafood the answer to our health and environmental crises? Author Paul Greenberg explores in a new PBS documentary, "The Fish on My Plate."

Just think of Indiana-based startup Try It Tiny as the Airbnb of tiny house-friendly land rentals.

Beef and farmed catfish aren't great on the environment, but wild-caught fish and farmed shellfish have low environmental impacts.

These 3 changes in your paper towel, zipper bag and plastic bag habits will get you started on your way to using fewer of these products.

An Atlanta jeweler upcycles tarballs picked up from the beaches of Louisiana's Grand Isle into eco-friendly jewelry.

Food news and items of interest from around the Web for your weekend reading.

Chesapeake Energy, which has one of the largest natural gas recovery operations in the country, halts all fracking in the state after a spill on the eve of the

While 'America Revealed' with Yul Kwon explores how typical systems work, we also explain new oil cleanup technology and Titanic history.

Greenpeace USA is seeking a senior strategist with experience managing organizers to mobilize grassroots members.

The Eagle Ridge Institute is searching for a green building specialist as part of the AmeriCorps VISTA YouthBuild USA program.

Oke USA is seeking a person passionate about Fair Trade to fill a Banana Logistics and Sales position.

SolarCity is hiring 100 new photovoltaic installers in Southern California and in the Greater Phoenix, Arizona area.

Delaware Valley College in Doylestown, Pennsylvania is searching for a Dean of Agriculture and Environmental Sciences.

Attention eco-fashionistas in New York City, Canopy Verde is searching for handbag models as part of a grassroots advertising campaign.

The EPA is searching for a senior (age 55+) to fill an administrative assistant position at the Ann Arbor, Michigan office.

Chipotle, one of MNN's top 10 organic fast-food restaurants, is searching for a technical writing and design consultant at its Denver office.

GoodGuide, home of the world's largest healthy and green product database, is searching for a Rock Star User Interaction Engineer.

A new EPA proposal attempts to limit toxic emissions of air pollutants from coal and oil-fired power plants.

Rhabdomyolysis is rare, but if your workouts cause extreme soreness or swelling, check with your doctor.

In the Netherlands, men over 65 on e-bikes are causing a big spike in the cycling death rate. And the Dutch are ahead of the game on all things biking.

Weight lifting does more than just pump you up; it can increase your chances for survival.

Defying stereotypes, teenager Vilde Westeng aims to be the best halling dancer.

Researchers looked at walkers and runners with bent and straight arms to find out.

Eating less is more important than exercise if you want to lose weight.

These half-dozen exercises will help you shed pounds if obesity is in your genes.

This is what the skies over Beaumont, Texas, look like whenever one of the local refineries loses power.

A new study says commuting to work by car may be far more harmful to your health than previously believed.

Some cities outside the U.S. are banning school drop-offs by car. They say it saves time — and lives.

A 'capped inversion' trapped air pollutants near the ground.

Just like 'Jurassic Park,' except with flowers instead of dinosaurs.

Mankind does some weird things to save animals from extinction.

New study from Australia suggests resurrection of extinct species could lead to a loss in overall biodiversity.

The giant bug, Lord Howe Island stick insect, was rediscovered in the early 2000s, and now scientists have confirmed it's in fact them.

This is the first photograph ever taken of the bizarre and mysterious species, Thismia neptunis.

Researchers study the genetic secrets of the world's last Pinta Island tortoise.

3 MNN Twitter fans will win a DVD of 'The End of the Line,' a documentary about overfishing that is narrated by Ted Danson.

Learn the trick to making mulled wine without burning off all the alcohol in this video for a drink that’s perfect for this weekend between the big holidays.

What happens when you heat up a Rum Cow? It becomes a soul-warming, winter cocktail.