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.

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: Team of chemical engineers from Austin are creating solar cells that are light, flexible, efficient and affordable.

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.

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

Expect one if you buy the new all-electric Nissan Leaf.

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

Last week's total solar eclipse was a confusing phenomenon for a brood of chickens in the Faroe Islands.

Earth probably formed in a hotter, drier part of the solar system than previously thought, which could explain our planet's puzzling shortage of water, a new st

The Mapdwell project at MIT combines Google Maps, solar power data and some smart algorithms to calculate the costs and benefits of installing solar panels.

British Parliament is striving to reduce its carbon footprint through various efficiency measures, including potentially outfitting Big Ben with PV panels.

A new scheme gives London's iconic-yet-disused phone booths a 21st century makeover as solar-powered gadget charging stations.

This company takes its treats to the next (green) level.

Scientists are searching for possible sources for life on Earth on the edge of our Solar System.

The Solar Homestead, a nifty homage to early Appalachian mountain settlement camps that wowed the crowds at the 2011 Solar Decathlon, is now available from Ashe

The 2017 Beaujolais Nouveau has just been released, fulfilling the destiny of many French gamay grapes.

A study explored 50 million laser images from a NASA satellite to calculate the shrinking depth of the ice sheets, finding the edges to be particularly thin.

Study reveals that open-water swims have a dramatic effect on young cubs, which are forced to follow their mothers in search of food and solid ground.

The new white Coca-Cola cans are part of a fundraising campaign to protect the Arctic.

Polar bears have ruled the Arctic for 100,000 years, but now they're struggling to keep up as the region undergoes a dramatic transformation.

Ice loss in Antarctica and Greenland has contributed nearly half an inch to the rise in sea levels in the past 20 years, according to an assessment of polar i

Scientist captures stunning sunrise during a research mission to study polar ice in the Arctic circle.

Scientists have released the first 'point of view' video filmed by a wild polar bear, offering a glimpse into the animals' daily lives.

Cadbury will certify 300 million of its Cadbury Dairy Milk chocolate bars as well as its packaged cocoa, at a cost of £1.5m ($2.1m), by the end of summer.

The narrowest building in Poland is the work of Israeli writer Edgar Keret.

Working with the nonprofit Solar Aid, students earn enough to bring electric light to a school in Kenya

Cheap solar panels, micro-inverters, and plug-in technology make DIY solar a reality for the first time.

Passive solar is pretty simple. The solar part is obvious: It refers to the sun. The passive part means it works without any mechanical devices, added energy in

The basic principles are pretty straightforward, but getting all the details right can be challenging. Probably the biggest issue is finding the right combinati

Better World Books will send a free organic, fair trade Divine chocolate bar to shoppers who pick up three used books.

Birds may go quiet, bats may fly around and pets may become uneasy, but it's difficult to predict exactly how non-human animals will react.

The universe's strongest source of energy may be the solution to one of Earth's oldest conflicts.

Two inventors have built a table-sized, automated factory that can quickly manufacture pocket-sized solar panels that last longer and are cheaper than current p

If you're thinking about replacing utilities with solar panels, you'll need to research and take some considerations into account first.

A special coating could dramatically improve the percentage of energy that can be harvested from solar cells by splitting photons in two.

GoSun Stove offers a new approach to solar-powered cooking with a heated tube used to prepare food.

Not all of us can put solar panels on our houses, but we can still support renewable energy. Here's how.

Homeowners with top-notch credit in California, Arizona, New Jersey and 5 other states will be eligible for direct loans from the PV-installing behemoth.

Researchers have developed solar concentrators that can be placed on windows or cellphone screens.

A new world record is making the future of solar energy look pretty bright.

From musicals to thrillers, there's more than a few flicks out there where the solar eclipse has a starring role.

New study says it's not about the best light, but where solar and wind can do the most good.

Kentucky's governor says the EPA is overstepping its bounds. Other groups contradict his claims of looking out for the environment.

Months ahead of the UN Climate Change Conference, French Parliament approves aggressive new commercial building rules.