If you took all the cows in the United States and figured out how much greenhouse gas they emit, would you be able to sue all the farmers who own them? Justice Antonin Scalia wondered about that in a…

Senator John Kerry teed off on congressional Republicans and others who doubt the seriousness of the challenge of climate change.

Environment and climate scientist Lord Julian Hunt told Reuters in a video interview that although the situation at the Fukushima plant is an “extremely serious event,” there are risks to consider…

A review of company and regulatory records shows that Japan and its largest utility repeatedly downplayed dangers and ignored warnings about its nuclear plants.

How green is the Amazon? Not as green as it used to be, an analysis of satellite images from last year shows.

I was given the assignment to not only photograph the event from Taipei, Taiwan, but to produce a multimedia video that showcased the world’s landmarks without lights as part of the fifth annual…

Why would anyone in their right mind volunteer to spend a month to a month in a half in temperatures that usually don’t exceed -10 degrees Fahrenheit or -23 degrees Celsius? In the case of the…

The U.S. government has announced this as National Tsunami Awareness Week, starting just days after a disastrous tsunami powered over Japan’s northeast coast. Not that anyone necessarily needed…

Indonesian wildlife officials have arrested a suspected smuggler of critically endangered Sumatran tigers after a two-day stakeout, World Wildlife Fund reports. There are believed to be fewer than…

Scientists writing in the journal Nature warn that we could be on the brink of a mass extinction, the kind of species loss that has happened just five times in the last 540 million years.

Climate doesn’t change by magic. Climate scientist Mark Serreze debunks what he calls “the Harry Potter theory of climate” and suggests an interesting idea about what made the last two U.S. winters…

How many investigations of climate scientists’ stolen e-mails does the world really need? The answer, in Washington at least, appears to be five. And counting.

“I’m not ‘Ragweed Appleseed,’ I don’t go around planting ragweed. I’m just the messenger. The reality is I’m going to have more patients,” Dr. Jay Portnoy, an allergy specialist, said.

As the market for applications running on mobile devices like Apple’s iPad and iPhone grows, so do ways to save you money and cut your carbon emissions.

Three pushes will be needed to put the United States out in front on clean energy, a Stanford professor says: “There’s a climate motivation and a(n) (energy) security motivation and a competitiveness…