NYC Mayor Michael Bloomberg's surprise endorsement of Obama follows the devastating effect of Hurricane Sandy on New York City and the Northeast.

Environmental scientist Amy Luers warns that a cultural shift to our approach to emissions and climate mitigation requires a broad, long-term view. Tying the is

The percentage of Americans who believe the climate is changing has grown, and 64% of Americans favor regulations to reduce greenhouse gas emissions.

President Barack Obama took a strong stance on fighting climate change, "for the sake of our children and our future."

After 46 years at the space agency, one of America's most famous climate scientists will now focus on rallying support for the fight against climate change.

Fearful of late summers and early springs trimming their seasons, ski areas all over the United States are calling for action on climate change policy.

Global warming will march on regardless, argues writer Sami Grover. Maybe it's time to get more ambitious in our response.

Arguing that 'Americans are already paying the price of inaction,' Obama unveiled an unprecedented national climate strategy in a sweltering speech Tuesday.

Southern Asia, western Europe and southern Australia are among the areas at most risk.

Crunching the numbers yields dividends, like a calculator that can measure the green score of electric cars anywhere in the country.

In a speech in Indonesia, Secretary of State John Kerry also derided "head in the sand" climate change deniers.

If things like saved lives and prevented illnesses have a dollar value, efforts to stabilize the climate might pay for themselves, two studies find.

Environmental org's 'Night of Comedy' brings laughter amidst a changing political landscape and growing concern over the impact of climate change.

In a surprise announcement, Earth's two largest economies revealed a game-changing agreement to cut carbon emissions.

The U.N. summit is going on despite recent terrorist attacks, and it does so with diplomatic momentum as well as a renewed sense of global solidarity.

The new U.N. climate agreement is being called 'a monumental triumph' and 'a turning point for the world.' Here are a few key points to keep in mind.

The quirky Joshua tree may be nearly gone in 50 years if we don't battle climate change.

NASA loses a CO2 monitoring satellite, plans for new coal plants are being shelved, and the price of CO2 credits drops out on the European market.

The ACES (aka Waxman-Markey) bill passes the house, but not all environmental groups are rejoicing.

The two cities will receive substantial financial and technical assistance from Bloomberg Philanthropies to help combat combat climate change.

Japanese scientists have discovered that some apples have changed in flavor and firmness over the past few decades. Science says climate change may be to blame.

Polio could be wiped out by 2018, but Gates says it will require investment and hard work.

Olivine is a miracle green rock that absorbs carbon dioxide naturally from the air.

Air conditioners have made architects lazy, and we've forgotten how to design houses that might work without it.

Milan, Italy's smoggy second largest city, envisions a future that's cooler, cleaner and swathed in green.

New research finds mean spiders know what it takes to survive extreme weather.

As the Senate takes up the climate bill (maybe), activists need to point Americans away from lies and despair, toward inspiration and opportunity.

When people like John Kerry back nuclear subsidies, green activists find themselves in a difficult position.

A spurious debate over purloined e-mails overshadows evidence that climate change is worse than we thought.

Last week’s readers help me come up with five more juicy ones to chew on.

Kids present a DVD of videos, songs, speeches and presentations on climate change to world leaders in Copenhagen.

Sarah Palin trades barbs with California Gov. Arnold Schwarzenegger after he criticized her anti-science stance on global warming.

Global warming science is under attack as never before, and these raiders are in the vanguard.

Video: President Obama addresses the leaders of nations attending the climate change conference in Copenhagen, urging countries to step up before it's too late.

A hilarious accounting of 'Climategate' and why universities need to professional PR help.

As governments struggle to solve the climate change crisis, who's stepping up?

Lexus-sponsored 'debate' between climate denier Phelim McAleer and green girl Simran Sethi yields important lessons for an ailing climate movement... especially

It's the season for global warming meetings. Will this year be any different?

Climate change now emerging a core issue in the fight to end poverty.

At the UN climate talks this week in Tianjin, polar bear leads a class in Tai Chi to teach negotiators about what "balance" really means.

The EJC is sending someone to Cancun for the next climate summit. Budding bloggers, this is your chance to get noticed.

Climate scientists are beginning to unite to against the misinformation campaigns of right-wingers, but it comes after they've been dealt several blows.

Idaho's Mike Simpson actually sounds reasonable when bringing up the debates of the past.

Some are wondering if the embattled media tycoon was behind the scandal that derailed the Copenhagen climate negotiations.

The world's most committed climate activists are descending on Durban for the next attempt to reach an international climate change treaty. So why did one of mo

In the face of the global challenge of climate change, our responses too often involve doing Much Too Little or thinking Way Too Big. The real key is to start a

The U.S. has become the pre-eminent blocker to this year's UN climate negotiations, but new scientific analysis and a growing civil society movement could force

The world is on course for climate catastrophe. Until the calamity is upon us, however, the "war footing" argument for dramatic action won't find much support.

Beyond extending the Kyoto Protocol for five more years, the Durban Platform's beauty (or lack thereof) lies in the eye of the beholder.

Attempts to address global warming and its potentially devastating consequences, resume today as delegates gather in Doha, Qatar.