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

The winners in this international dog photo contest range from a blind, senior dog to cute, matching puppies.

It's been 50 years since the Apollo 11 mission and the first step on the moon. Here's a look back in photos.

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

For 55 years, photographers have showcased their work in the Natural History Museum, London's Wildlife Photographer of the Year competition.

Photographer Frank Liu captured photographs of a polka-dotted zebra in Kenya that ended up published in National Geographic.

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.

A BBC videographer learns what an Arctic seal's final moments might look like.

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

The U.S.-backed proposal was opposed by Canada, which is home to two-thirds of the world's polar bears.

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

The governor’s office of the Arctic Svalbard islands is seeking to fill the temporary position beginning July 8.

The orphaned polar bear cub that was rescued in Alaska earlier this year arrived safely at a new home in Buffalo, N.Y.

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.

In the next decade, the tropics will suffer unprecedented climate change effects, long before the Arctic and its polar bears see big shifts.

Explore.org has affixed several high-definition cameras to locations in Churchill, Manitoba, the 'Polar Bear Capital of the World.'

Polar-bear dens, where mama bears raise young cubs during the harsh Alaska winters, could be identified using laser technology.

The culprit of the sudden death of famed polar bear tot Knut has been found, says an international team of scientists.

The 2-month-old cub at the Toronto Zoo hasn't quite nailed walking, but he's definitely got being cute figured out.

Polar bears have shifted to a diet of more land-based food in response to climate change and melting sea ice.

The conservation nonprofit Polar Bears International will use the 360-degree panoramas for educational outreach and scientific research.

The cuddly duo — a boy and a girl born at the Hellabrunn Zoo on Dec. 9 — explore their enclosure with their mom, Giovanna.

Far from the frosty climate of the Arctic Circle, this adorable family is making do in the summer heat with a brand new swimming pool.

A geothermal loop will keep a fancy new elephant house toasty with the captured heat generated by the cooling system in the polar bear habitat.

This real-time aurora video may not seem amazing at first, but that quickly changes at the 1:52 mark.

Could an influx of Syrian asylum seekers upset Svalbard's human to polar bear ratio?

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.

Will Obama’s green cabinet give birth to the next spotted owl?

A freshwater lake the size of the state of West Virginia has practically disappeared. The lessons that the Aral Sea may hold for U.S. waterways.

Mother Nature Network's 'Ask Vanessa' offers unsolicited advice on the environment for the president.

History has been made. Today is for the hangover, and then the hard work. Six distinguished environmentalists weigh in.

Obama steals a play from the Reagan/Bush playbook, and hopes for the opposite result.

What’s been called the largest wetlands restoration in the Western U.S. was halted in December. California is projecting up to a $42 billion budget shortfall

Sometimes, the big guns in Congress aim to keep stuff 'away' from their states. Senator Harry Reid and the tale of Yucca Mountain is a prime example.

An MNN column causes an uproar in the scientific and not-so-scientific community. Our columnist responds.

30 years after its near-calamity, the American nuclear industry is still paying for its inability to tell the truth on its worst day.

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

Humanity is often at its worst and wackiest in our search for water. Peter Dykstra on a free-flowing font of bad ideas.

Step right up and watch how the government is misspending your tax dollars on the environment.

Being eco-minded on Earth Day is like being merry on Christmas. It's to be expected. But here are seven things you can actually do to wake you from your eco-slu

You'll never guess who's fighting to stop the construction of a wind farm off the shores of Cape Cod. Environmentalists.

"Enron could've saved us" and four other environmental predictions that didn't come true.

Garbage science isn't rocket science. Each of us throws away a ton of stuff every year. Literally. The problem, and why it's only getting worse.

Obama is an agent of change. Or at least he's supposed to be. Peter Dykstra grades six areas of the Obama presidency.

A recent study featuring blog posts from fictitious Italian politicians found the use of swear words made candidates sound more relatable.

The mainstream media is ignoring the most important side of the BP oil leak story- the incredible suffering of Tony Hayward, the CEO of British Petroleum. Could

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.