climate change

Coffee lovers, alert! A new report says that the world's coffee supply may be in danger due to climate change. In the world's biggest coffee-producing nation, Brazil, the effects of warming temperatures are already being felt in some communities.

It has been a common belief that low-emissions vehicles, like hybrids and electric cars, are more expensive than other choices. But a new study finds that when operating and maintenance costs are included in a vehicle's price, cleaner cars may actually be a better bet.

The cars and trucks we drive are responsible for about a fifth of greenhouse gas emissions in this country. That's why Jessika Trancik, an energy scientist at the Massachusetts Institute of Technology, decided it was time to take a closer look at vehicle emissions.

A panel of judges Tuesday is hearing a case that could change the future of the power industry.

The D.C. Circuit is hearing an appeal of the Clean Power Plan, an Obama administration rule that would restrict carbon emissions from coal- and gas-fired power plants.

Bertha Vazquez has taught earth science for more than 25 years.

"For many years I covered the basic standard, probably like most people in the country do," she says.

Then one day, she says, she decided to throw that all out the window after seeing former Vice President Al Gore speak at the University of Miami at a screening of An Inconvenient Truth, his documentary about climate change.

"And it really ... hit me. This is 2007 and, I've got to tell you, I lost sleep," Vazquez says.

The Mendenhall Glacier is visible from the visitor center parking lot. But it's still pretty far and if you traveled all the way to Juneau, Alaska, you probably want to get up close to the blue tinted ice.

Touching the face of the glacier can be tricky. You're separated by cold, silty water, and a hike over the ridge could take hours.

Visitor center staff know that. And inside, they use it to prove a point.

There was a time when Sandra Gologergen's freezer never ran out. Packed with traditional Inuit foods like whale, walrus, seal and fish, her freezer has been an essential lifeline, ensuring her husband, three kids and grandson make it through the long harsh winters of Savoonga, Alaska.

"Then that changed," she says.

Mesa Verde National Park in southwest Colorado is known for its iconic cliff dwellings, but archaeological artifacts left by the Ancestral Pueblo are all over. Rocky remnants of homes and farming sites are scattered throughout the dense pinyon juniper forest.

The way clouds cover the Earth may be changing because of global warming, according to a study published Monday that used satellite data to track cloud patterns across about two decades, starting in the 1980s.

Clouds in the mid-latitudes shifted toward the poles during that period, as the subtropical dry zones expanded and the highest cloud-tops got higher.

A city in India has recorded the highest temperature in the country's history — 51 degrees Celsius, or 123.8 degrees Fahrenheit.

Murari Lal Thanvi told the BBC it was so hot in the city of Phalodi on Friday that his cellphone stopped working. "I was able to switch my mobile phone on after putting a wet cloth on it for about 20-25 minutes."

Pauline Askin/ Reuters

Scientists have long warned about the potential for the West Antarctic Ice Sheet to dump an incomprehensible amount of ice into the sea as global temperatures rise.

But their warnings were generally about a future hundreds of years away.

Now, a new report suggests that future could be much closer.