As world leaders fly into Rio de Janeiro for Rio+20, thousands of people from indigenous tribes, environmental groups, unions and religious organizations gather

Did Nutella, the tasty chocolate hazelnut spread, really need more sugar?

Science Photographer of the Year contest highlights how photos can open a window to science.

Even the big cars are fuel misers these days, as buyers with cash in their pockets cast a wary eye on $4 gas. Did GM really roll out a 35-mpg Chevrolet Impala?

There are 104 nuclear power plants in the continental United States, two of which operate in quake-prone areas and others that are in need of major upgrades.

The enchanting yet highly controversial 'magical new green space' has many Londoners fired up over issues of funding, aesthetics and accessibility.

Business magnate shares the benefits and practice of daily meditation in his new book 'Success Through Stillness.'

Can something as subjective as happiness be measured by a formula?

For many people, summer means music festival season. Here are several steps to protect your hearing while also jamming out to your favorite music.

You haven't heard 'Bohemian Rhapsody' until you've heard it performed by beautiful trombones.

Director Josh Fox accuses the energy industry and politicians of failing the American people.

X- and Y-shaped ocean waves that are often seen at beaches may help explain why tsunamis can be so devastating, researchers say.

A judge in Okanogan County, Wash. rules that an ill-sited prefab hut must be moved from its landscape-altering perch above the Methow Valley.

Powered by the wind and sun, Ecocapsule is the ultimate off-grid micro-home for vagabond vacationers.

NASA astronauts make history with an all-female spacewalk — now that the spacesuit problem is resolved.

Chanie Kirschner remembers a time long ago when no one had cell phones.

It's unclear whether some animals really smile to convey joy, but these critters sure look happy.

An heirloom tomato has been named after Michael Pollan. The "Michael Pollan" tomato is an oddly shaped green and yellow tomato.

In 2015, Albuquerque launched an innovative program aimed at helping the area's homeless. Instead of ticketing panhandlers, city officials offered them jobs.

Anxiety and fear give way to joy and awe when we tune into scenes of the natural world, finds a study commissioned by BBC, makers of "Planet Earth II."

Just in time for the conservationist president's birthday, the U.S. unveils a plan to freeze uranium mining near one of his favorite places: the Grand Canyon.

Matching supply to demand is crucial when it comes to energy. And a concept called demand response can help us do it.

Punta Gorda, a sleepy Gulf Coast getaway north of Fort Myers, shines bright as Babcock Ranch, a solar-powered eco-town, attracts its first residents.

New research out of Australia unlocks clues about how your body responds to exercise at the cellular level.

This is what the skies over Beaumont, Texas, look like whenever one of the local refineries loses power.

There are many reasons to recycle electronics, including copper, steel, gold, silver. The wiring in some older desk tops may yield up to 5 pounds of copper.

From fewer migraines to more self-esteem, there are so many mental and physical benefits to growing old.

These small resolutions can make for a great start to the new year.

Formed by two wood-clad shipping containers, Skit 2014 is the ideal living arrangement for eremitic types who don't mind ladders and composting toilets.

More than half of the country’s rivers and streams are suffering from nutrient pollution and habitat degradation; mercury and bacteria a problem as well.

A family ate organically for 2 weeks, reducing pesticides in their bodies big-time. Here's why it matters.

The business closed in 2013, but ‘zombie stores’ kept the concept alive.

Virtualization makes cloud computing possible, productive and profitable. Many businesses large and small think it can do the same thing for work by creating a

A new study suggests the shape of an egg is determined by how much time a bird spends in flight.

New research finds dads are happier than moms, and it might have to do with how much time they spend playing.

Don't dwell on the bad stuff that happened in 2016. Take a look at the year's best news.

Michigan state parks are teaming up with Bob Ross Inc. to plant lots of 'happy little trees.'

Did you know that rounder leaves have greater daily light interception and carbon gain? Here's how and why plants change the shape of their leaves.

Bicycle sales exceed cars in Europe, and there's compelling evidence that pedaling increases the national happiness quotient.

It was a combination of hubris, professional rivalry and a desperate bid for success in the American market.

While industry apologists peddle the idea that newspapers are doing just fine, the new media world is leaving them behind.

Adam finally gets his chance to shine in the (non-damaging) spotlight with 7,000 energy-saving LEDs set to undo the dim atmospherics of the Sistine Chapel.

There has been a lot of debate all across the Internet about whether Earth Day really means anything anymore or whether it has been hijacked by marketers.

What really makes people happier: A home in the city or a Mcmansion in the suburbs?

John Addison says finding your inner calm will get you more than halfway there. His new book shows you how.

Philosopher Andrew Taggart explains how we can care less about work — and more about our actual lives.

Her application inspires Paris Summer Innovation Fellowship selection officials to look beyond age and take a chance on a kid with passion.

A New Yorker article gives a behind-the-scenes look at what led to the demise of the climate bill this summer. Here are five observations.

Avoiding chemical starter logs and gels but not in the mood to go out and gather pine needles? As fireplace season approaches, consider these fume-free fire sta

Charles Darwin's birthday has become a global holiday for science.