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

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

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

In celebration of Earth Day on April 22, NASA has launched a clever online campaign that enables participants to "adopt" a small piece of the planet.

Being called a bird brain really isn't an insult, now that scientists have uncovered just how smart these feathered friends really are.

We label a lot of species with the shiver-inducing denizen of the night, even if they don't suck blood.

Turret spiders, the minuscule relatives of tarantulas, pack a powerful punch for any insect venturing close to the castle walls.

The enormous spiders known as Goliath birdeater tarantulas are gentle giants, and beautiful to boot!

The newest advertiser on the Glenn Beck program is using fear of an economic and societal collapse to sell heirlooms seeds.

Massive glacier break-off in Greenland demonstrates the frightening future painted by new NASA study on global temperature rise.

The glaciers of the Andes Mountains have retreated at an unprecedented rate in the past three decades.

Typically thought of as a tropical climate pattern, the influence of La Niña spreads as far as Antarctica.

Icebergs that tumble into the ocean are the source of unusual "earthquakes" recorded at Alaskan glaciers.

Finnish researchers have developed a strong, flexible material from spider silk and tree cellulose.

Austin's 'Chevy Volt Village' makes a handy political target, but in fact clean energy — and especially wind power — has been very, very good for Texas' ec

At 3 percent of the US market & growing, have hybrid cars reached a tipping point?

The all-new Niro is joined by revamped versions of the Optima.

They may seem like a modern oddity, but arachnid decorations on Christmas trees are actually inspired by an old Ukrainian legend.

The name Unicorn Spit isn't classy, but in the right hands the gel paint can turn furniture and cabinets into sophisticated works of art.

Brighter Living with Jill Cordes: Thriftiness is a green practice.

Experts doubt the theory behind the 'happiness pie chart,' saying what you really can impact is how happy you are.

"The Silent Evolution" by Jason deCaires Taylor is 400 permanent sculptures in Mexican waters.

Enter The Nature Conservancy's digital photography contest for a chance to see your work on the cover of the nonprofit's annual calendar.

A showcase for American artisans, the virtual shop Catherine's Table is a warm and cozy ode to beautiful things.

The colorful world of topiary art starts with a plant and ends with a masterpiece. Here are 17 examples to inspire your creativity.

For centuries, art and science have informed one another, and the result has been some spectacular creativity.

Rabbit Island residency programs encourage artists to incorporate conservation, ecology and sustainability into their work.

From confounding dress codes to exclusion from many events, the road to gold for women has had plenty of quirky twists.

In honor of the International Day of Happiness, here's everything you need to know about laughter.

Singing helps the spirit soar, but can it boost the body as well?

Grand Rapids is the second-largest city in Michigan, claiming a modest-sized metropolitan area with about a million people in total. It is perhaps best known as

Pittsburgh is one of the Eastern United States' former industrial powerhouses that has been successful in reinventing itself. Previously known for its now-shutt

Before the plastic shopping bag can settle into a life of ease in the Pacific ocean it must first navigate its way past dogs, park rangers, and tree branches.

Earth now has five or six major ocean garbage patches, and new research suggests they'll continue growing for 'at least the next thousand years.'

Even if you don't live near the sea, there's plenty you can do to help the cause.

Vietnam veteran gets his dying wish to spend the day with his beloved dog.

By implementing 'housing first' on a national scale, Finland has almost eliminated homelessness.

No matter what, if you're going to buy, buy smarter — and that means buying more sustainable items.

A new study looks at happiness among millenials who buy 'green' or buy less.

It's the paradox of aging when we should be feeling worse as we get older, but we actually have a better sense of well-being.

You can do so much more than compost the pits from avocados. Here are some ideas.

Once an exotic and costly delicacy saved for royalty, the pineapple now stands as a welcoming beacon for all.

A flavorless watermelon is a reason for a good cry.

If you know what to look for, you can pick the perfectly ripe cantaloupe, honeydew or watermelon every time.

Durian is known for its strong odor. Despite being banned in some hotels and subways, lovers of this unusual fruit go to great lengths for a taste.

That white substance between the orange peel and the flesh may be bitter, but don't throw it away, it's actually good for you. Here's what you need to know.

It's about time somebody looked at shopping as a separate transportation category. It turns out to be a major energy hog.

Abraham Lincoln helped the country become the scientific and engineering powerhouse we know today, says Astrophysicist Neil deGrasse Tyson.

The world's oldest depiction of a campsite may have been unearthed outside a cave in Spain.

The rocket's return even surprised SpaceX founder and CEO Elon Musk, who initially thought the Falcon 9 booster didn't actually stick its landing.