More than a fifth of the country's garbage is food.
The average meat-eater in the U.S. is responsible for almost twice as much global warming as the average vegetarian.
Congress has created 42 different tax incentives for energy. Baucus wants to sweep them all away and replace them with just two.
Obama's new adviser, John Podesta, will push the White House to act more forcefully on climate change. Here's what he was advocating back in 2010.
One new study suggests lower natural gas prices may be saving households up to $725 per year. Others find lower numbers. Here's why they differ.
At the Warsaw climate talks, rich and poor nations are arguing over who's responsible for climate change. Here's how to understand the dispute.
A new U.N. report finds a vast gulf between the world's stated ambitions to limit climate change and actual practice.
Global emissions hit a record high in 2012. But the rate of growth appears to be slowing.
Geoengineering is a risky way to blunt the effects of climate change. But climate scientist David Keith says we still need to consider it seriously.
Since 2008, the world has committed $25 billion to carbon capture — with little to show for it so far.
U.S. carbon emissions from energy hit their lowest level since 1994 last year. But they're already starting to rise again.
The EPA still has the authority to regulate greenhouse gases, but the Supreme Court will review a permitting program for large industrial facilities.
The new EPA rules will make it very hard to build a new coal plant in the U.S. But cheap natural gas was already making that difficult anyway.
It's a question marine experts have been racing to get a handle on in recent years. Here's what they've found.
When World Bank employees travel, they usually do so in business class. That means more legroom AND more carbon emissions.