A former coal executive was sentenced Wednesday to a year in prison and fined $250,000. In December, ex-Massey Energy CEO Don Blankenship was found guilty of conspiring to violate federal mine safety laws.
Los Angeles can seem like a company town, dominated by the movie business. But the area is dotted with oil wells — landmarks of a key industry in the region. Now plunging prices are taking their toll.
At the Heartland Biogas Project, spoiled milk, old pet food and vats of grease combine with helpful bacteria in massive tanks to generate gas. It's all thanks to anaerobic digestion.
Renewable energy is taking off across the nation, but storing the energy is still a problem that is challenging companies to innovate, with solutions ranging from molten salt to ice.
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.
Before the Model 3 was even unveiled, people lined up at Tesla stores to put down a deposit. With a base price of $35,000, the car will go on sale late next year at the earliest.
March is when oil equipment starts using ice roads on the Alaskan North Slope. It's also when polar bears and cubs emerge from dens. Aerial spotters find dens so roads and workers can bypass bears.