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.

As polar bears struggle to survive in the fast-changing Arctic, MNN presents a tribute to the animals' legendary power, precocity and perseverance.

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.

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.

How have Easter's ancient paganist roots manifested in this modern Christian celebration?

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.

These religious structures have been sitting atop cliffs and mountains for centuries now with no easy way to get to them.

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.

Skip the commercial mouthwash and eat your halitosis away instead.

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.

Control flare-ups and reduce the itchiness of eczema with these natural treatments you probably have at home already.

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'

Pike Research forecasts huge boost in NGV market — but there will only be 26,000 natural gas refueling stations worldwide.

A new forecast from Pike Research says California and New York will be the most popular states for PEV sales.

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