Lucky was a broken street dog until he journeyed half a world away to inspire others.

The Sip of Hope coffeehouse in Chicago's Logan Square supports mental health initiatives, including suicide prevention.

In 2013, Bush shaved his head in solidarity with a young toddler with leukemia.

WildArk wants to inspire action that encourages conservation action and community engagement.

New initiative to raise awareness of child homelessness features Lily, a character first introduced in 2011 to address food insecurity.

The haka is a traditional Maori routine performed at many ceremonies in New Zealand. Here, two groups respond to the terrorist attack on 2 New Zealand mosques.

This revolution isn't being led by baby boomers, but they are a big part of it.

Daniel Kish is leading the way for research on echolocation and blind people because of his self-taught ability to navigate smoothly without sight.

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

Weather has grounded the Solar Impulse 2's trip across the Pacific Ocean, but when its pilots embark on the flight, they'll use meditation to stay alert.

A pair of British pilots recently pulled off a daring aviation stunt, becoming the first to fly two planes in formation through a building.

Here are the commercial airport runways that will leave you white-knuckled.

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.

The Swedish 'flygskam' translates as 'flight shame' — and it seems to be working.

The Herculaneum scrolls are an archaeological detective story 2,000 years in the making.

A vast unseen force, more expansive than gravity, seems to connect galaxies separated by vast distances.

Study found high levels of mercury in California's fog, but the problem likely extends around the world.

The density of turtles is so high that you could almost imagine crossing the sea by hopping from shell to shell.

Whatever your intent, the statistics show you're probably only using those reusable bags once.

Similar organisms might have seeded the early Earth with life.

A wave in the Pacific Ocean off the coast of Cape Mendocino is one of the tallest waves ever recorded.

The artifact was probably dropped by conquistadors as they fled from the city.

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

The explosion detected in a galaxy 390 million light-years from Earth was 5 times more energetic than anything seen before, but it's no Big Bang.

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

Australian soldiers from the 9th Brigade used their day off to help feed displaced koalas affected by bushfires at Cleland Wildlife Park.

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

All 8 species of pangolin are in decline due to illegal trade, but conservationists hope to save them by softening the scaly animal's image.

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.

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

Bumblebees exposed to neonicotinoids grow up with permanent brain damage.

The American robin, Turdus migratorius, is migrating earlier likely in response to changing environmental conditions.

Become a backyard naturalist by taking part in the City Nature Challenge.

The benefits of mindfulness keep piling up, from growing grey matter to helping you master your emotional responses.

It might take a little more effort than when you were younger, but it's worth it to keep your friends close.

The country aims to source 100% of its power from renewable sources by 2030.

Fire-created thunderstorms, "ember attacks," high winds and fire clouds are all a part of the intense fires down under.

There are smart, innovative alternatives to incinerating and landfilling apparel.

Newly discovered fossilized skulls found in South African cave show Australopithecus, Paranthropus and Homo erectus living together in the same era.

A new book, "They Are Already Here" by Sarah Scoles, looks at the people who are obsessed with unidentified flying objects — but for different reasons.

Data can help us understand some of the many ways the human body reacts to this virus and the next one.

One way to make life a little easier is to focus first on the door of the coop. Here's how.

The 'City of Light' announces plan to produce 50 percent of its energy from algae.

'Fuel' documentary brings change to classrooms. Film's green curriculum inspires schools to switch to biodiesel buses.

Reduction of dangerous phosphates in cleaners has some protesting lack of cleaning prowess.

Algae fuel start-ups across the country are getting closer to commercial scale production of the environmentally friendly fuel, thanks to investment from the go

Historic floods and relentless storms are expected to boost the dead zone up to 15 percent larger than ever before, experts say.