Here's a small birthday tribute to Mohandas Karamchand Gandhi, the "great-souled" man who was born 148 years ago today. It's a poignant way to celebrate the man

Quinoa is one of the most nutritious foods on the planet, cooked like rice, gluten-free, and loaded with vitamins and minerals.

Mongolia, the host of this year's World Environment Day, is home to Earth's rarest bear. Conservationists hope 2013 will mark the start of its comeback.

The IPCC report is expected to include summaries on melting glaciers, sea level rise and the impact of human activities on the global climate.

The island country is currently experiencing a harrowing seasonal infestation of the Malagasy migratory locust.

World leaders can't agree on nixing the leap second, so we’ll just keep adding them until they figure it out.

Many common sleep problems can be remedied by small, but specific, changes to nutrition.

Health ratings on packages could influence consumers' purchasing decisions and drive food companies to make healthier products.

“Eat Pretty” has simple nutrition information to transform your beauty routine – inside and out.

The National Potato Council lobbied Congress to include potatoes in the WIC nutritional program, claiming its exclusion sent the wrong message to consumers.

The Institute of Medicine has raised the amount of potatoes, corn and peas it recommends you eat each week.

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

Starbucks will be selling its Christmas Tree Frappuccino only until Dec. 11.

Beautiful photos show the desert in Yucca Valley, California, and Joshua Tree National Park covered in snow.

An unusual spike in auroral activity culminated in this mystical aurora borealis display captured by Jingyi Zhang, a photographer and astronomer.

Photographer Will Burrard-Lucas's new book 'Land of Giants' chronicles some of the last days of this towering gentle giant.

Dozens of massive president heads sit in a field in Virginia, waiting for a new home in a museum.

No one gets more excited about iceberg season than camera-toting Canadian Mark Gray.

Wildlife photographer Michel Rawicki captures polar bears in their private moments.

The people of Churchill, Manitoba, live among polar bears — some of the world's most dangerous predators — for several months each year.

Polar bears and brown bears diverged much longer ago than previously thought.

The zoo s hoping the 2-year-old male will pair up with the resident female and produce a cub.

The Central Park Zoo’s celebrated star was made famous when an animal psychologist was called in to address the bear’s problems.

The world's southernmost population of polar bears is waiting for sea ice to form just weeks before the U.N.'s climate change conference.

The new season of Smithsonian Channel's 'Polar Bear Town' will explore the intersection of humans and the 'Lords of the Arctic' in Manitoba.

Video: Dennis Hong is living his dreams — literally — in a lab filled with wacky robots.

Video: Virtual reality immerses students in proteins and peptides.

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.

A controversial move by a church in Georgia has people asking "Can you do that?"

Around 180 laypeople help the sisters keep up their round-the-clock prayer vigil.

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.

Martin Luther King Jr.'s legacy lives on through his speeches and sermons.

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.