These robotic labs, called ESPs, collect water samples in the open water and can determine if a beach is safe for swimming or water is clean enough to drink

Time can be rough on a dam: as it ages, repairs are more costly and it risks catastrophic breakage. But removing one can also be a major eco-hazard.

A team of researchers restored "lost memories" in the brains of mice.

OK, I admit. Maybe there's no such thing as climate change. Maybe it's all a hoax. Maybe.

An art student inspired by "clean eating" creates ephemeral fruit mandalas that are as tasty as they are beautiful.

These well-educated believers have positive views of science but selectively reject certain theories that conflict with their religious beliefs.

The 40 Bags in 40 Days challenge encourages you to tackle one area of clutter in your home each day and get rid of it responsibly.

Five years in the making, the film takes audiences on an interfaith journey through one of the world's 'most storied' cities.

Nat Geo's telling of Christ's life focuses on his plight as a human being living in such a tumultuous time.

Here are a few of the most popular Buddhist holidays explained.

Experts are divided on the power of spirituality and an upbeat mindset.

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

Fancy a new townhouse on Cupidity Drive?

When the Dalai Lama and Archbishop Desmond Tutu get together to share wisdom, we should all stop to listen.

It emerged from wartime bombing unscathed. But can Germany's Ulm Minster survive an onslaught of pee?

The Swedish ritual of Årsgång or "year walk" is said to reveal visions of the future — if you can complete the requirements.

The ancient Romans saw 'Pluto's Gate' in what is now modern-day Pamukkale in Turkey as the entrance to the underworld. Now we know how it worked.

Danny Ferraro was driving on Highway 105 in Texas when he spotted clouds arranged in an angelic way.

Should we care that Obama's Presidential Limo will get single digit miles per gallon?

It's dangerous to buy gas guzzlers just because oil is cheap right now. Most pundits predict eventual major hikes in this, our most volatile commodity.

Research is finding that probiotics might be useful in treating high blood pressure, anxiety, eczema and other maladies.

Bees give us pollination and honey. Now new research suggests their hives may also help prevent hair loss.

The Indian long pepper's use in traditional medicine dates back thousands of years.

What if they built electric vehicles (EVs) and there was no place to plug them in? That’s been the chicken-and-egg conundrum keeping EVs off the market in mod

The Nissan Leaf will be produced in Tennessee, in America's largest auto plant under one roof. Take a tour with me on the electric tram.

Phil Lebeau has a hands-on look at Nissan's highly anticipated all-electric vehicle, the "Leaf."

Plug-In America Vice President Paul Scott used to talk about EVs. Now he's going to be selling them on the floor of Santa Monica Nissan.

California may be getting all the coverage, but Tennessee is offering clever rebates and other perks, too.

Automaker pulls back the curtain to reveal the magic behind its latest ad for the all-electric Leaf.

With the all-electric Nissan Leaf, your home acts as the car's primary 'filling station.' How will this impact potential buyers who live in apartments or don'

Kelley Blue Book releases its list of top 10 green cars for 2011, and the all-electric Nissan Leaf ousts the 2010 winner, the Toyota Prius.

The latest Nissan Leaf commercial examines what life would be like if everything was powered by gasoline.

The lucky few have gotten their Nissan Leafs, but the company has scaled back its 2011 U.S. deliveries from 20,000 to 10,000, and dampened expectations about a

In response to Japan's power crunch resulting from the Fukushima disaster, Nissan unveils a two-way charging system that makes it possible for your home

AdWeek ranks its top 10 favorites for 2011, including Chipotle's sustainable food initiative and Nissan Leaf's all-electric world.

Jim Motavalli shares his insights about electric vehicles in his new book, High Voltage: The Fast Track to Plug in the Auto Industry.

Narrator Daryl Hannah, filmmaker Leslie Iwerks and others discuss the Keystone XL pipeline battle in 'Pipe Dreams.'

A lawyer for energy giant Kinder Morgan recently argued that seeing the faces of unhappy pipeline protesters could constitute a form of assault.

Should working farm animals be allowed to live a peaceful retirement, or should they be slaughtered and consumed? The fate of oxen at a little farm at Green Mou

The Abbey Road Farm Bed & Breakfast gives new meaning to the phrase “reduce, reuse, recycle.”

The organic produce company may sell nationally, but it still keeps a roadside stand in Central California where people can buy organic produce and much more.

44 different types of organic herbs and vegetables are growing in the middle of Chicago's busy international airport.

The stench of foul-smelling flowers attracts insects that aid in their pollination.

This 753-acre piece of Southern history is located only 30 miles from downtown Nashville.

The mini-farm isn't just for tasty food — the Veg-01 experiment will test how well lettuce and other large plants grow in orbit.

Actor graces the cover of Wine Spectator magazine along with his winemaking partner, Marc Perrin.

In just 20 years, the city of Sequim, Washington transformed from a declining arid farmland into a fragrant prairie of purple blooms.

Before reaching for commercial pesticides, try these solutions first to keep bees, butterflies and beneficial bugs safe.

Experts say Japan's kids and unborn babies have the greatest risk of developing cancer from exposure to radioactive material.

In the nuke-crazed 1950s, Ford wanted to put mini reactors in cars. That didn't fly, but now we're hearing of radioactive thorium lasers that could power a car