We're looking at 2 to 6 months before the oil will stop gushing into the Gulf of Mexico. There are still a lot of questions that need answers.

Sacrifice isn't just about giving up chocolate, but that's a good start.

A Bay Area tech entrepreneur became the first owner of a Nissan Leaf last weekend, and the company says it will the first 20,000 orders delivered by next summer

The FDA issues warnings about high levels of radiation in food from parts of Japan. There doesn’t seem to be too much of a danger of contaminated foods enteri

An earless rabbit allegedly born near Japan's severely damaged Fukushima nuclear plant has become the latest poster child for the side effects of radiation expo

Pete Stockton, a former Department of Energy official, says the public should be concerned but not alarmed as a wildfire inches closer to the nuclear weapons fa

If a dangerous asteroid pops onto the radar with no time to spare, nuclear bombs may be the best way to respond.

The quintessential image of a tropical paradise, the palm tree is much more significant than you might think. Here are 10 things you may not know about palms.

See how much you know about the prehistoric beasts that once roamed the Earth.

Researchers in Costa Rica are studying the vocalizations of Alston's singing mice to learn more about human speech.

If you're holding back from buying an electric or plug-in hybrid, read this story. Some of what you think you know may turn out to be wrong.

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

Company co-founder and namesake passed away, leaving 'for greener fields and wilder woods.'

Our food blogger steps into a Whole Foods for the first time in years and learns a few things she didn’t know.

Michael Moss' exposure of the food industry in "Salt Sugar Fat" will open your eyes.

Environmental groups sue State Department about contact that Clinton and a pipeline lobbyist (and former aid) may have had.

About wind turbines. Efficiency, safety and neighbors are key issues for wind power siting.

Smithsonian Channel special celebrates the surprising history behind the flag that inspired our national anthem more than 200 years ago.

Two Pennsylvania children, ages 7 and 10 have been permanently banned from talking about fracking.

The worldwide shortage of helium threatens many industrial, medical and military applications far beyond balloons.

Scientists announced the discovery of a new moon around Pluto on July 11, bringing the dwarf planet's number of known satellites to five.

Here are five things researchers can learn about Earth by studying the dwarf planet Pluto.

If policing your child’s plate at a holiday dinner dampens the celebration, this one tip may be incredibly freeing for you and your children.

Thanksgiving feasts and Christmas treats will be here soon, but being proactive can help you win the battle of the bulge.

Focusing on what we're thankful for can help us turn outward and express appreciation, especially during the holidays.

8 strange and surprising facts about the T. rex, king of the dinosaurs.

New EPA ruling on infilling valleys may limit future mountaintop mining permits, but it's only the first step in a long process to stop the 'Appalachian Apocaly

"It's 'Just' Anxiety," a film by Susan Polis Schutz, shows how the mental health issue manifests itself in various people and how they treated it successfully.

Pigs are smart, emotional animals that have lived alongside humans for thousands of years. In the Year of the Pig, here are some surprising pig facts.

Measles can weaken the immune system for years afterward.

From Dutch flower fields to Californian slopes, windmills are one of mankind's oldest ( loveliest) energy machines. Here are some windmill photos to celebrate.

Renewable energy is already growing rapidly. But these recent developments in energy storage could prove to be a game changer.

Bees don't want to sting you. They have far more important things to do, like keep our agriculture system afloat.

We can't just build better; we have to change the way we live.

Kitchen exhaust turns out to be a very complicated issue where there is no real consensus.

Summer solstice, the unofficial first day of summer, is the day with the most hours of daylight.

A new feature added to Project Sunroof, a free solar mapping tool from Google, makes keeping up with Joneses even easier.

If you're a fan of humanely raised, sustainable beef, you may want to become a 'steakholder.'

Is responsible seafood the answer to our health and environmental crises? Author Paul Greenberg explores in a new PBS documentary, "The Fish on My Plate."

In the Netherlands, men over 65 on e-bikes are causing a big spike in the cycling death rate. And the Dutch are ahead of the game on all things biking.

Go ahead and have a seat. New research says it's not the sitting that's the problem.

Your social network predicts your health and wellness more than your fitness tracker, study finds.

Eating less is more important than exercise if you want to lose weight.

Many American likely aren't aware that the air in their homes and offices may be cause for concern.

At least five similar die-offs have happened before, but this is the first in human history — and the first with human help.

Researchers study the genetic secrets of the world's last Pinta Island tortoise.

Test your knowledge of the wild world of animal mating.

From what they eat to wear they live, test your giant panda knowledge with this quiz.

Crows and ravens are some of the smartest animals on the planet. So what do you know about them?

What do you know about your kidneys? They don't get the acclaim of the brain or the heart, but these small organs work nonstop to keep your body healthy.