Kevin Butt's job is to find cleaner ways to power Toyota. One of the hardest places to do that is at the automaker's sprawling plant in central Kentucky, a state where nearly 90 percent of electricity still comes from coal.
Butt points out a new engine assembly line, where a conveyor belt moves in a slow circle. He says it was specially designed with a more efficient motor. There are also enormous fans overhead and LED lights, all changes that save millions.
On Capitol Hill, Freedom Caucus chairman Mark Meadows carries a reputation of a right-wing rebel — after he and his group of roughly three dozen hard-line House conservatives helped kill the Republican health care bill last month. But back home in his western North Carolina congressional district, Meadows is hailed a hero.
United Airlines says it will never again use police to forcibly remove passengers from overfull flights. But this week's public relations disaster for United highlights a problem that airlines face every day: how to entice people to give up their seats voluntarily.
NPR reached out to some of the top thinkers in the world of "game theory" who say they think the industry could be doing a much better job. Here are some solutions they offered.