Rob Greenfield is a hands-on activist who has participated in many high-profile environmental feats to raise awareness about people's impact on the planet.

For five decades, Southern Company’s research and development (R&D) organization has been leading industry innovation to deliver more value to customers.

A $2.5 billion investment in a renewable energy hub will bring about 2/3 of the power that the nuclear plant once did.

The federal government is proposing opening up Utah's Sand Flats to drilling.

The 1.3-megawatt array covers about 10 acres in Plains, Georgia.

When it comes to aviation accidents, bad weather and human error are often to blame.

Ever wonder how many balloons it would take to lift you off the ground? Erik Roner just found out.

New $48 million installation will provide land and air services to animals of all sizes traveling through JFK airport.

NASA’s projects are radically redesigning passenger aircraft to reduce fuel use and pollution.

The ARK at JFK will boast luxurious accommodations for all species — but not people.

Simba, a French bulldog, arrives safely after a quick-thinking landing.

Drones could rule the skies, but only if their operators follow the rules.

Here are five of the most spectacular aircraft that flopped for a variety of reasons, including the Spruce Goose and a nuclear-powered plane.

The FAA has warned that some unidentified tests on the West Coast will jam GPS signals — but how do pilots deal?

The Airlander 10 is a helium-filled airship intended for surveillance, communications and aid deliveries.

The Virgin Galactic founder envisions a near-future where space travel is as easy (and luxurious) as first-class air travel.

World's first tree-powered long-haul flies from Seattle to D.C.

Despite fantastic cabin service and other amenities, these sky marathons can tax even seasoned travelers.

Are you spontaneous enough to take a surprise vacation? Try travel company Pack Up + Go.

Phoenix cancelled flights because due to high temperatures. When it's too hot, the air's density is lower, and that reduces lift.

Prices are low, values are high and there aren't a lot of crowds in shoulder season.

Singapore's Changi Airport outdoes itself once again.

Photographer Michael Marston captures airplane's rainbow trail in pictures and video.

The genetically modified rice variety is laced with essential vitamins.

This problem has plagued physicists ever since the laws of motion were first conceived.

The American coot is not as boring as it looks. These ducks are hiding some rather mischievous behavior under that boring veneer.

The rate of warming in the oceans is 'relentless,' and the hottest 5 years ever recorded were the last 5.

The volcanic eruption of Vesuvius in A.D. 79 was so intense it turned one man's brain into glass.

The new auroral form called a sky dune has been discovered by amateur stargazers.

The groundbreaking quantum experiment could allow us to build things on the atomic level.

The object 'Oumuamua may have been tumbling through interstellar space for billions of years, scientists say.

Pablo Escobar’s legacy of mayhem continues by way of a thriving population of giant African mammals.

The eagle that smashed through a Wyoming man's window was bearing a leg band from 1989.

A turtle's shell is a lot more fragile than it looks, which is we need to stop looking at it as a suit of armor.

Researchers from Newcastle University captures a wild grey seal 'clapping' on camera for the first time.

Maybe it was on a meditation retreat.

Two videos show whale watchers witnessing multiple whales breaching in Maui.

Orangutan extends hand to 'rescue' man in snake-infested water during safari in Borneo.

It might mean that spiders possess an extraordinary kind of consciousness.

Abandoned as a puppy because he was too obsessive, Bear the dog is now rescuing koalas.

Popularized in 2017, the windshield phenomenon is used to describe the lack of insects on a windshield after a drive, a sign of a dwindling bug population.

Blue tits and great tits keep an eye on how their bird friends react to certain foods.

Scientists say the parasitic blob H. salminicola doesn't need to breathe.

Endangered blue whales return to the sub-Antarctic island of South Georgia.

Many amphibians are biofluorescent and researchers have several ideas why the trait evolved.

Narwhals use their tusks for a number of different tasks, but scientists think they've found the most important one.

It looks like nothing else ever seen on Earth, but the bizarre 'Tully Monster' is still waiting on a definitive classification.

New research about relationships backs up this age-old adage.

Figuring out the precise brightness of the moon will help with more accurate satellite views.

These wearable devices are made specifically to lend strength and enhance lifting ability, and they are helping an aging population stay on the workforce.