Humanity can burn less than one-sixth of its known fossil-fuel reserves. That's one upshot of the big new IPCC report.
The IPCC is releasing a massive new report on global warming. But is there anything we didn't already know back in 1990?
China currently has plans to build synthetic gas plants to curtail air pollution in the cities. Scientists warn that could have huge unintended consequences.
The U.S. currently gets 4 percent of its electricity from wind. But what if we ramped that up to 30 percent?
The least efficient airline in the U.S. uses 26 percent more fuel than the most efficient. That's fairly surprising.
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.
The EPA is unveiling a rule that could make it impossible to build new coal plants in the U.S. for years to come.
There was more sea ice in 2013 than there was in 2012. That seems to have confused a lot of people. It shouldn't.
Your refrigerator probably uses more energy than the average Nigerian
A big new study tries to answer one of the most pressing climate questions: How much methane is leaking out of our natural gas infrastructure?
A recent study found that farming in Kansas could peak by 2040 unless serious water-saving measures are taken.
Most security experts missed the environmental roots of Syria's current crisis.
The world's oil markets are losing their capacity to adjust to even minor disruptions. That's not a good sign.
It's a question marine experts have been racing to get a handle on in recent years. Here's what they've found.
It isn't just Syria driving upward the price of oil. It is the risk of more Syrias.
Over the past three decades, the U.S. and Europe have pared back their oil use, but the world as a whole keeps using more.
The wild horse population out West is growing fast. And, right now, the government doesn't have a good plan for controlling it.
For the second straight year, the federal government has blown through its budget for fighting wildfires before the season's even over.
There's a surprisingly wide range of opinion on what the upcoming EPA rules on power plants might look like.
As more people more to the coastal cities, flooding damage is expected to increase tenfold between now and 2050.