Just because you know certain foods by a particular color doesn’t mean it’s natural.

A new study finds surging levels of harmful phthalates in instant macaroni and cheese.

A cosmic collision between two stars caused a stunning gas rainbow reaction.

Billy Joel said "only the good die young." He was wrong. The poor and the middle class die younger, too.

Gordon Edgar has a radical concept: Make the world of cheese accessible to everyone, not just foodies who know a little bit of jargon.

Commodities trader stockpiles crops and bets on high futures.

Soaring prices have made walnuts, almonds and other nuts a tempting target.

A major concern among those living near the Gulf of Mexico is land loss.

Alexandra Cousteau speaks with Pitt, who points out we have hit the age of limits on the Colorado.

The tags show that you took the extra time to make your gift special.

The International Garden Photographer of the Year honors 16 photographers for their macro images of plants and animals.

From too much shade to drainage issues and HOA rules, a green lawn may be easier said than done. But it doesn't have to be.

There's a poaching ring focused on some succulents in the genus Dudleya, which can fetch millions on the black market in East Asia.

The rhyme "leaves of three, let it be" could describe a lot of plants, so you have to know what to look for to identify poison ivy, poison oak and poison sumac.

QVC star and intimate apparel designer Kathleen Kirkwood wants to recycle your old 36Bs.

TerraCycle's 'Make Garbage Great' says yes, with 100-plus recycling tips and DIY projects.

It's a bird ... it's a plane ... if it's in New Orleans, it's just a Black Hawk helicopter airdropping old Christmas trees.

North Carolina State University's new pizza box composting project raises the bar for college recycling programs.

Onward Bag is landfill-skirting design at its most ingenious.

We make interesting decisions when we choose what to recycle and what to throw in the trash.

New research suggests life on Earth sprang from geothermal vents in the deep ocean.

Several studies suggests some people may be sleeping their way to an early death

The hard material known as cementum in our mouths may record our lives' most intimate details.

A study finds that a tomato's cancer-fighting properties are reduced when consumed with iron-rich food.

By playing and joking with young patients, Carrick makes going to the hospital a little less scary.

These before-and-after shots perfectly capture the moment a compliment is received.

How about an out-of-this-world accessory for your Valentine?

The ability of royal jelly to help heal wounds is yet another great reason to love (and save) the bees.

Some male birds keep their mates interested using fancy displays of affection.

A great horned owl is rescued from the ashes of the Maria Fire in California.

Video shows a majestic murmuration of starlings flying across a beautiful Irish sky.

If you're dreaming of a white Christmas, these photos of snow-covered nature from all around the world might do the trick.

More and more charities say they have been helped by these 'pint-sized philanthropists' who are choosing to give rather than receive.

The Sustainability in Prisons Project transforms prisoners’ lives while enriching the planet.

Habitat loss is devastating rare species worldwide, but as the success of wildlife corridors suggests, a little connectivity can go a long way.

How a pen-pal relationship between altered two lives, inspired a book and continues to help others around the world.

Grown-ups and Ph.D.s aren't the only ones creating groundbreaking gadgets that protect wild critters.

Carbon dioxide emissions are making the ocean more acidic. The lower pH level inhibits the ability of many marine plants and animals to build their shells and s

A modern take on comfort foods uses what is fresh and available during the season, but also explores new ingredients and stretches your imagination to look at o

Live plants make a thoughtful and long-lasting gift, especially when chosen with care and customized with little touches that make them even more special.

The website FlightNetwork features 50 of the world's most beautiful cities, as chosen by 1,000 of the world's top travel professionals.

Video shows two people skating on freshly frozen ice in Alaska, and one of them has a special reason to savor the adventure.

Those seeking a more sustainable holiday are choosing DIY food gifts. But have you taken all the precautionary measures when it comes to canning?

The secret ingredient in the Mediterranean diet is in the antioxidants.

Anything with a diesel engine -- plane, boat, motorcycle -- can run on diesel, straight vegetable oil or biodiesel.

The plan to drill in the Arctic National Wildlife Refuge is hotly contested between oil companies, Alaskans and conservation groups.

50 technology companies will compete in the clean technology 'Oscars.'

Researcher in Glasgow says he has created living cells made of metal instead of carbon — and they may be evolving.

Bioluminescent art blends science and creativity to create images that can only be seen in the dark.

The Office of Naval Research hopes to harness locusts' powerful sense of smell to protect soldiers on the battlefield.