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

Leave it to Shigeru Ban to breathe ingenious new life into the painfully abundant remains of a major catastrophe.

How a social networking site beat the major media on a major environmental story.

Environmental activists are bringing problems (and solutions) right to your desktop via Google Earth.

By studying particles on the ocean floor, scientists conclude that Earth supports one-third less life than originally thought.

Earthworms affect the amount of carbon dioxide produced in the soil.

Skylines and landmarks from across the globe turn off their lights for 60 minutes in celebration of Earth Hour.

First new global map of Earth at night since 2012 shows the growing impact of light pollution across the globe.

There has been a lot of debate all across the Internet about whether Earth Day really means anything anymore or whether it has been hijacked by marketers.

Don't wait for April 22! Here is a month-long list of eco-awesome activities you can do to celebrate the planet every day.

Avoiding chemical starter logs and gels but not in the mood to go out and gather pine needles? As fireplace season approaches, consider these fume-free fire sta

Tuckerman & Co.'s student founders are working their values from 'dirt to shirt.'

Legendary naturalist and broadcaster urges humanity not to 'lose its connection with the natural world.'

Humans seem to be causing 'a radical shift in the living architecture of the planet,' researchers say.

New marine reserves are making a big splash around the planet — and not a moment too soon.

Earth Overshoot Day is the day we go into 'nature debt,' utilizing more than the year's supply of water, forest and agricultural resources.

Our planet has lost 60 percent of its vertebrate animals since 1970, but there still may be time to save the rest.

Taking care of the Earth is frequently on our minds, but in honor of Earth Day on April 22, people often look to take that observance more seriously.

Saving a buck while doing your part to save the Earth is a great way to mark Earth Day. Like most holidays, Earth Day presents ample opportunities to score a de

The Nature Conservancy wants everyone to enjoy the earth this Earth Day by gathering outside to enjoy a meal. We've got some ideas to make sure your picnic hono

A heads-up to parents about Disneynature's newest release follows the story of two feline families struggling to survive in the African savannah.

From eco-snacks to community-wide green events, here are 10 great ways to celebrate and protect the planet.

Earth Day events and rallies will be held in several cities around the country. Here’s a quick look at some of the big ones.

Free coffee at Starbucks, carbon offsets and sustainable seafood are just a few examples of what businesses are doing in honor of Earth Day.

Lace up your sneakers and grab the kids for one of these family-friendly running races for Earth Day.

Nancy Sutley, chair of the Council on Environmental Quality, and Heather Zichal, deputy assistant to the president for Energy and Climate Change, take your ques

By treating 'the environment' as something outside our daily lives, Earth Day is no longer calibrated to meet the scope of the climate and energy crises — nor

It would be safe to say that Brooklyn's Big Green Theater — an eco-education program where kids create plays performed by adult actors — isn't what most f

These Earth Day facts shed some light on the annual tradition and how it has changed over time.

Kick off Earth Week with this dramatic three-minute film, which dives into the 'Heart of Darkness' to highlight the humbling majesty of our planet.

Take a journey through decades of U.S. environmental history with MNN's Earth Day board game.

Your guide to TV and movies celebrating the planet for Earth Week 2012.

In honor of Earth Day's namesake orb, here's a time-lapse tour of Earth itself.

No generations in the history of human civilization have consumed as much of the planet's natural bounty as the ones alive today. So what are we doing this Eart

Retailers can't seem to let a holiday pass without building a sale around it. Fortunately, these companies' Earth Day promotions focus on eco-friendly products.

Keep it simple this Earth Day with these easy-going, eco-savvy ideas.

As marketers use Earth Day to hock anything and everything, including a 'Real Housewives' episode, bloggers weigh in on the ridiculousness of it all.

Groupon deals, rain barrels, epic videos and the marketing hype surrounding Earth Day.

A picture of your favorite place could win you, and the charity of your choice, $1,000.

Submit your Earth Day lesson plan to this contest and you win could tons of cool prizes for your classroom.

Green moms from around the Web share their plans for celebrating Earth Day this year.

A look at Earth Day's history and six things you can do to make the planet better.

Your guide to the holiday's planet-centric programs.

The search engine shows the globe some love in celebration of April 22.

Not sure how to celebrate Earth Day with your family? Here are 22 eco-savvy ideas to get you started.

In honor of Earth Day, NASA has released an awe-inspiring video of the best imagery captured by its Earth-observing satellites.

The launch of Earth Day in 1970 raised suspicions in Washington, D.C.

Celebrate the planet with these TV shows, movies and even a radio program.

Cuddle up with your favorite snuggle bunny and one of these great green reads to celebrate Earth Day with your family.