Mice zapped with cosmic rays can incur brain damage, suggesting that astronauts' brains could suffer over time on deep-space missions to Mars and beyond.

NASA's Mars rover Curiosity has found a new route to some interesting rocks after its original path proved too difficult to traverse.

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

A fresh batch of satellite images showcasing the red planet's diverse topography is providing scientists with valuable data for future travel to Mars.

NASA has just released an image of a unique hole on the surface of Mars.

The Mars InSight lander, developed to peer deep into the red planet's interior, is slated to launch on the morning of May 5.

It would be the first heavier-than-air craft flown on another planet.

'Nashville' star Eric Close goes green by cleaning up after others.

'Golden Boy' star Theo James hates waste.

Animal poaching makes Silas Weir Mitchell ('Grimm') 'murderously enraged'.

Plus: Notes from around Hollywood.

Actress helped create wells in third-world countries.

Actress was also recently named PETA's Person of the Year.

Bombarded by bats and covered in bees, George McGavin investigates 'Ultimate Swarms' for Animal Planet.

National Geographic's popular 'Brain Games' series takes a look at the laws of attraction in a special Valentine's Day episode.

James Costa's new documentary looks at childhood obesity, school food and what fuels all those unhealthy cravings.

California's Anza-Borrego Desert State Park is home to a natural desert oasis, complete with huge palm trees and gravel-bottom wading pools.

For a generation, activists have built their protest movement on the scientific facts of climate change. But the facts of another kind of science — neuroscien

The now former congressman leaves behind a lengthy pro-environment record.

The White House is taking a political risk: Spurn environmentalists enough times, and they might return the favor.

NYC Mayor Michael Bloomberg's surprise endorsement of Obama follows the devastating effect of Hurricane Sandy on New York City and the Northeast.

World leaders have pledged to limit the rise to 3.6 degrees, but a new study finds global temperatures could increase 10.8 degrees by century's end.

Environmental scientist Amy Luers warns that a cultural shift to our approach to emissions and climate mitigation requires a broad, long-term view. Tying the is

Fearful of late summers and early springs trimming their seasons, ski areas all over the United States are calling for action on climate change policy.

Reducing carbon dioxide may be solved in storing emissions in deep, subterranean rock throughout the country.

Crunching the numbers yields dividends, like a calculator that can measure the green score of electric cars anywhere in the country.

The Food Network host known for her outrageously caloric concoctions talks about how she's losing weight and why exercise isn't as 'addictive' as she'd been to

A joint scientific statement reveals that the use of sugar-free products doesn't necessarily guarantee a smaller waistline.

Could Alzheimer's really just be another form of diabetes, caused by eating too much junk food?

Researchers find patients with severe psoriasis were almost twice as likely to have Type 2 diabetes than those without the skin condition.

Resistance is not futile. In fact, it can stave off colon cancer and ease inflammatory bowel disease and other digestion problems.

New research supports the hypothesis that parasites could have a role in preventing certain diseases.

Between Ceylon and cassia cinnamon, which is better and how do you tell them apart? Here's the scoop.

Researchers warn health care providers that obesity is not the only factor that can contribute to Type 2 diabetes.

A random YouTube video leads to the reunion of two sisters who grew up 5,000 miles apart.

A Facebook meme and the resurgence of indie bookstores show that books are still important in our culture.

The social media giant has partnered with the National Center for Missing and Exploited Children to help get out the word when kids are in danger.

Need to get friends and family off your back? There's an app for that.

Organizers are planning a huge event to celebrate the joy of 'ginger pride.'

By taking stock of what you want from your internet experience, you can customize your time online with the slow web.

25-year-old wave runner Lindsey Russell undertook the 20-mile challenge to raise money for charity.

Mild-mannered European travel guru Rick Steves never fails to surprise.

As a partnership with a nonprofit that provides shelter to homeless families goes to show, Amazon's takeover of downtown Seattle isn't without altruism.

Stockton is set to become the first city in the U.S. to experiment with providing a universal basic income to some low-income families.

Video: Chuck Leavell, keyboardist for The Rolling Stones and cofounder of MNN, sits down with singer-songwriter Will Dailey to chat about Farm Aid and eating go

Video: Will Dailey talks about the importance of Farm-Aid, his music career, and how social media is helping him release his new album 'Torrent'.

Scientists have found a 'world-class' helium gas field in East Africa. That's a big deal, and not just because squeaky voices are funny.

The bandage uses a thickening agent known as kappa-carrageenan, obtained from seaweed, to create injectable hydrogels.

Stunning 3-D videos capture the drama of life on a subcellular level.

Researchers discover that an overwhelming number of older adults with low vitamin D levels suffer from depression.