Australia's desert ants are thriving in the face of climate change.

The decline of Ohio's butterflies likely reflects a broader crisis for a wide range of insects, researchers say.

Beautiful video from National Geographic shows how a caterpillar becomes a butterfly.

The western monarch population may be on the verge of collapsing.

An archaeologist dug through a publicity blitz to make an amazing find. A story of grave robbers. Ancient civilizations. Hidden treasure. Glowing skulls.

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.

Take your old writing instruments to Office Depot this week and earn Sanford coupons.

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.

Hoping to pass on her enthusiasm for protecting the environment, a 17-year-old high school student goes beyond the call of duty to teach second-graders about en

A new video from charity: water offers hope for the 1 billion people who don't have easy access to clean water. Actress Kristen Bell narrates this well-done vid

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.

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.

Attention Earth Day shoppers: The most highly anticipated, wildly expensive energy-saving light bulb out there, the L Prize-winning winning 60-watt equivalent L

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.

Leonardo DiCaprio, Linkin Park, Don Cheadle, and Sergio Marone are all judges in the Date with History contest, which will send one young visionary to address t

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.

World Elephant Day, National Dog Day and Southern Hemisphere Hoodie-Hoo Day are just a few celebratory days to mark on your calendar.

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.

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.

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.

We asked Carla Hall, Mayim Bialik, Andy Richter, Izabella Miko about their Earth Day plans.

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.

Celebrate National Parks Week and Earth Day with us with this breathtaking visual tour of some of the most beautiful sights in America's national parks.

How much money and energy do you spend each year powering the gadgets in your home? This infographic breaks it down for you.

If nothing else, taking a picture of yourself in nature for Earth Day will get you outside.

From environmental tips to hanging out with monkeys, there's no shortage of Earth Day entertainment.

Meet the winners of the first California Green Medal: Sustainable Winegrowing Leadership Awards.

Thought-provoking documentary weaves together stunning imagery with enlightening interviews to show how connected we are to our planet.