Researchers are setting their sights to resurrecting passenger pigeons and woolly mammoths, but would it do more harm than good?

DARPA using biotechnology in an effort to boost the U.S.'s national defense.

Signals that coordinate the rhythms of our heart and lungs offer inspiration for creating 'unbreakable' security codes.

Imagine your city illuminated at night by glow stick-like lighting generated entirely from living organisms.

In 10 or 20 years, we're going to need a lot of buildings like this senior living community in the Eastlake neighborhood of Seattle — resilient and efficient.

Smog in northern India is so bad, it's the equivalent of smoking 2 packs of cigarettes a day.

Air pollution is so pervasive it even affects babies in the womb and causes long-term mental and physical health problems.

Corporate renewable energy goals that once looked ambitious are being met much earlier than expected.

The conceptual Dutch Windwheel takes the term 'mixed-use development' to dizzying new extremes.

An award-winning MIT team has created a portable, solar-powered desalination system that could provide freshwater in remote locations.

Technology could be used to generate electricity or even propel tiny toy cars.

U.N. task force looks at turning one big problem into an energy resource.

Bill Gates, Mark Zuckerberg and other billionaires have announced a new private coalition to help fund development of nascent sustainable technologies.

Photovoltaic cells convert the sun's energy into electricity — but what if solar energy could instead be converted directly into liquid fuel?

Wave power has the potential to supply 25 percent of the nation's energy.

Advanced methane capture could make a significant dent in U.S. energy demand.

Connecticut inventor and tinkerer Dave Nichols thinks cars should run on biomass. He just might just be on to something.

Politically, it would help if we could grow tropical jatropha in the U.S., but this could be an imported fuel we'll welcome at the pumps.

Scientists have discovered a novel new way of using microwaves to turn orange peels and other plant-based waste into plastic.

Your next camping trip should include this camp stove, which is capable of efficiently burning biomass materials like pine needles, small twigs and wood chips.

A deceased celebrity tops Barbara Walters' annual list for the first time.

The company that brands itself as kosher is now being sued by some of its customers who claim it actually isn't kosher.

Mayor announced a plan to offer his employees discounts to Weight Watchers.

Author John Temple was granted unprecedented access to the controversial family.

Watch what happens when an eager young lion cub gets in too deep (literally) while dining on a freshly killed buffalo.

Jumbo squid, also known as "red devils," have been known to attack divers before. But a submarine? Watch the nightmarish Greenpeace video here.

Scientists aren't sure yet just how widespread these beautiful, glowing hawksbill turtles are.

These are the best preserved specimens of this extinct Arctic lion ever found.

Who or what is making the sound remains a mystery, but it may be a 'dinner bell' signaling feeding time for deep sea creatures.

New fossil reminds us of the bizarre life that once inhabited our planet.

These invasive species are wreaking havoc on reefs and the fish that live amongst the coral.

These cubicle-dwellers aren't afraid to show how much they like the season.

The average smoker takes about six days of smoke breaks each year, so maybe nonsmokers deserve extra vacation days in return.

It's remarkable how attitudes change when the issue is in your own backyard, but progressive boomers are making themselves heard.

Homeless woman Emily Zamourka became a viral video star after singing in a Los Angeles metro station.

The secrets and science behind those giant balloon characters in the Macy's parade.

These fresh food marketplaces are a cultural connecting point that sell live and dead animals, but they have been linked to increased risk of disease.

Swarms of jellyfish are clogging water intakes at power plants around the world, and a new study explains why jellyfish populations are on the rise.

National Geographic's Travel Photographer of the Year contest winners show the power of nature, the beauty of cities and the strength of humanity.

"The Living Forest" by photographer Robert Llewellyn and scientist Joan Maloof drops you into a forest and encourages you to really notice its life.

The LA County Fair has held a tablescaping competition since the 1930s, and it's so popular that they have to turn contestants away each year.

Brizi is a cushioned air filter and fan designed to clean the air around your baby's face and protect them from air pollution.

In the 1930s, the National Park Service created master plans for each U.S. national park that showed and explained the vision for development of each park.

Studies show we emit chemicals that communicate emotion, and whether we realize it or not, our brain responds to fear alarms.

Probiotics, whether in supplement or food form, are a booming industry, but the science behind the health benefit claims is still catching up.

Nearly 7,000 languages are spoken around the world, and one of them dies every two weeks. Here are some that could disappear in our lifetimes.

The Great Green Wall is rooted in Africa's Sahel region on the southern border of the Sahara. Once completed, it will be the largest living structure on Earth.

Screaming is primal. Whether it’s pain, horror or a baby's cry, a scream demands attention. Why do we scream, and why does the sound of one make us react?

The U.S. Women's Soccer team got a visit from service dogs in training before their match Thursday.

Under Vet Friends Foundation, military veterans adopt senior dogs looking for homes, creating beautiful new relationships.