Energy

As Renewables Boom, Companies Explore Energy Storage Technology

Renewable energy has a problem — the wind doesn't always blow and the sun doesn't always shine when we use electricity the most. Batteries can store energy for later, but companies are looking for cheaper alternatives. Three reporters examine technologies that employ air, salt and ice.

Bankruptcies Fuel Uncertainty In Coal Communities

Peabody Coal, one of the largest coal producers in the world, is teetering on the edge of bankruptcy. It would be the latest in a string of major coal companies going under. But drive through Wyoming's Powder River Basin, where 40 percent of U.S. coal is mined, and it's as if nothing has changed, even at sites owned by bankrupt companies.