New video shows how sugar effects the brain like alcohol, nicotine and heroin.

Nearly half of all air pollutants exceed breathable levels and they often have a dangerous impact on our health.

Comedians Tripp and Tyler have envisioned a funny — and much more accurate — Facebook movie of their own.

For every cat photo or video you post on social media using the #MyGreatCat hashtag, Purina Pro Plan will donate a pound of food to feline rescue groups.

One Australian is on a mission to have coffee, one-on-one, with each of his 1,088 Facebook friends. The question is, would you want to do that?

The number of updates you make a day, how often you use the 'like' button and even your photo album organization can tell your Facebook friends a lot about you.

A new toy line that lets babies post their images to the Web raises an interesting question.

Have you noticed a plethora of puppies on your Facebook page? This is why people are posting them.

New research shows that just clicking the 'like' button reveals more about us than we realize.

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

It's rare, but it's real. Here's how to keep it from happening to you.

When you share a rescue organization's posts or comment on them, it may not always be what's best for the shelter.

A new study reveals the majority of people you consider your friends may not feel the same way about you.

SuperFood Drive is working to turn food pantries into nutrition pantries.

Adding volunteer work or a spiritual journey to your travel calendar can improve your mental health and add meaning to your trip.

Who needs calendars of yoga cats when you could have bearded mermen from the Newfoundland & Labrador Beard and Mustache Club on your walls?

Housing charity New Story teams with 3-D printing startup ICON to fabricate 100 affordable and innovative abodes in El Salvador.

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: Chuck Leavell, keyboardist for The Rolling Stones and the cofounder of MNN, takes a tour of the Okefenokee Wildlife Refuge.

Video: Chuck Leavell, keyboardist for The Rolling Stones and cofounder of MNN, sits down with the Indigo Girls to chat about the complexities of touring with bi

The secret to a longer, healthy life might have been living in our guts this whole time.

It may be subliminal, but you transmit your fear to your dentist.

MARS spectral X-ray scanning technology will bring unprecedented detail and versatility to doctors seeking a window into the human body.

Looking at calcium and vitamin D supplements, researchers found no difference in the health outcomes for people who took supplements and those who didn't.

Plucking litter from canals while sightseeing is one of the more singular ways to spend a couple hours in the Dutch city.

As their habitats give way to sprawling human developments, more and more animals are being forced into cities and suburbs.

Two recent studies show that visiting an urban park for as little as 20 minutes will reduce stress and boost emotional well-being.

The Salmon Cove home was built with the environment in mind.

Tour a LEED Platinum certified denim factory. The VDS Group factory in Bangladesh received LEED Platinum certification.

This 60-second video is like watching everyone's lives flash before your eyes.

Japanese scientists have discovered that some apples have changed in flavor and firmness over the past few decades. Science says climate change may be to blame.

Sustainable agricultural practices add essential carbon to soil's organic matter, which could be key to reviving soil quality.

Extreme weather journalists are not the calm we need during a hurricane or storm.

It's not the smartest thing you've ever done, but here's why this winter mishap happens, and how you can get out of it in one piece.

Moving invasive purple sea urchins off the California coast helps to restore balance to the ecosystem.

One side says the EPA is overstepping its bounds, while some say it didn't go far enough.

A recycling company is turning the controversial party drink into real-life car fuel.

The EPA has moved one step closer to allowing a higher blend of alternative fuel in your cars, but the usual suspects aren't on board.

On October 6, Panasonic Corporation is hosting a worldwide Earth Lunch Hour event.

Probably not, but one enthusiast is organizing a petition to make the social networking site consider the idea.

Actress will front marketing campaign targeted at getting more involved in turning off the lights on March 26th.

Supermodel once again named Global Earth Hour Ambassador in preparation for the lights-out moment on March 31.

Whether you go out stargazing or simply relax in the dark at home, spending an hour without power Saturday night might just re-energize your weekend.

Iconic landmarks and skylines all across the globe were plunged into darkness on Saturday for Earth Hour.

Annual event, which encourages people around the world to power down for one hour, teams up with the cast and crew of 'The Amazing Spider-Man 2'

7 great ways to spend the time and spread the message of Earth Hour with your kids. On Saturday, March 26, 2011, governments, businesses, residential homes, and

Tree-friendly book lovers rejoice by planting trees for each book read.

World's leading CEOs and policy-makers 'creating environmental capital' in tough economic times.

Green Shipping lets businesses and individuals measure and offset the CO2 emissions of packages when using UPS, FedEx or the U.S. Postal Service.

MNN chats with guitarist Stone Gossard about the band's latest project and why the group is passionate about making a difference for the environment.