Not only can coral reefs buffer humans from disasters, but protecting them is 15 times cheaper than building sea walls.

President Barack Obama challenged world leaders to join the United States in fighting global warming. Watch the entire 10-minute speech here.

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.

Here is a sneak preview of what to expect when the AR5 report is issued next week, based on the leaks so far.

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

Climate change has already taken a serious toll on human well-being and world economies.

A young poet from the Marshall Islands reportedly 'brought world leaders to tears' at the U.N. Climate Summit.

With a Global Alliance dedicated to Climate-Smart Agriculture, you’ll be hearing more about this effort with a goal to improve agriculture and food security.

The pontiff's sweeping new encyclical is meant not just for Earth's 1.2 billion Catholics, but for 'every person living on this planet.'

Climate scientist James Hansen was arrested on Feb. 13 outside the White House while protesting the Keystone Pipeline.

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

As Japan faces energy restrictions after a particularly trying month of March, normally AC-happy citizens are faced with a daunting prospect: Getting through th

With an estimated price tag of nearly a billion dollars, the 7-mile bike highway would help alleviate London's traffic and air pollution woes.

Manchester's City of Trees scheme will plant one leafy specimen for every resident.

From wrestler Diamond Dallas Page to the New York Giants, these sun-saluting stars may surprise you.

Environmental groups sue State Department about contact that Clinton and a pipeline lobbyist (and former aid) may have had.

Some of the world's most prominent climate activists are headed to D.C. to protest against a proposed pipeline that would bring Alberta's unconventional oil to

Climate activist Bill McKibben says now is the time for the Obama administration to stand up to the richest industry on Earth.

Reporters for the online, nonprofit news site spent seven months reporting on tar-sands oil spill in Michigan.

T. Boone Pickens talks politics, climate change and polar bears during his latest visit to Washington, D.C., to speak to the National Press Club.

The modern prefab specialists at Modscape went for the obvious when naming this doozy of a concept home. But hey, it fits.

A new study finds that earthworms cause soil to release more greenhouse gases.

The environmental movement's challenges are greater than ever, but the founder of 350.org says victory lies ahead.

After scrutinizing thousands of peer-reviewed climate studies, the largest analysis of its kind reveals a 'gaping chasm' between science and public perception.

The Swedish home furnishings giant plans to offer 'lower carbon alternatives' to the signature pork and beef meatballs sold at its in-store cafes.

Climate change may be stripping nutrients from the most basic of foods, and that's making its way up the chain to us.

There's less paper in need of binding these day, so put this simple contraption to work with these clever applications.

Yours truly will be featured on the latest edition of Climate TV talking about mountaintop mining and the future of climate activism: 'The war is just beginning

Parts of the Appalachian Mountains are so buffered against climatic shifts they may provide a 'stronghold' against global warming, researchers report.

Phone recycling has become so easy, convenient and, in some instances, profitable, there’s really no reason not to do it.

U.S. Postal Service expands electronics recycling program. Customers can trade in old cellphones for cash at 3,100 USPS retail locations.

AT&T customers recycled 50,942 devices in a single week, setting a new Guinness World Record.

Michael Pollan discusses how the food system uses too much fossil fuel and reminds us that solar energy from plants is free.

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.

Obama and Jintao announce sweeping clean energy 'cooperation plan' that could significantly reduce global greenhouse gas emissions.

Lisa P. Jackson, administrator of the Environmental Protection Agency, discusses climate change with Jon Stewart.

The Southern Hemisphere will experience more devastating wind and waves as the world warms, according to new research.

You can watch Leo DiCaprio's "Before the Flood" free online.

This grizzly bear cub thought he was just enjoying a day at the river's edge before a scallop shell ruined it.

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

On top of averting budget cuts, Congress' deal to dodge the fiscal cliff also extended several key incentives for programs related to the environment.

Consider helping our honeybees by planting native flowers.

A new online investing platform will fund energy-efficiency improvements for churches and nonprofits in poor neighborhoods.

And it's potentially more efficient than an LED.

Beyoncé ended the year on a sour note with members of the NASA community.

Utilities from California to North Carolina are preparing for a brief but sharp decrease in solar production during the Great American Eclipse on Aug. 21.

Everyone gets winded while climbing stairs, but sometimes it's a little more serious.

Think you're an expert at talking trash? Then you won't be afraid to test your recycling knowledge.

Climate activists call for action to strengthen the most important piece of environmental legislation in history.

The Bramble Cay melomys lost most of its habitat to rising sea levels.