Volkswagen sales slowed after it was revealed that the company had been cheating emissions tests by outfitting some diesel cars with "defeat devices." Markus Schreiber/AP hide caption

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David Whitcomb of Waynesboro, Va., says he paid a premium for the diesel engine on his 2015 Passat TDI because he thought it would mean fewer emissions. Courtesy of David Whitcomb hide caption

itoggle caption Courtesy of David Whitcomb

Capterpillar says it plans to lay off up to 10,000 workers, with many of those cuts coming in Illinois, amid a slide in equipment orders. Scott Olson/Getty Images hide caption

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Atlanta is earning the nickname Silicon Valley of the South, joining spinoffs Silicon Alley in New York and Silicon Prairie in the Midwest. Greg Williams/Flickr hide caption

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German carmaker Volkswagen says it has a plan to refit diesel cars that will make them comply with emissions standards. Here, the entrance to a VW branch in Duesseldorf, Germany, is seen on Monday. Patrik Stollarz/AFP/Getty Images hide caption

itoggle caption Patrik Stollarz/AFP/Getty Images

United Airlines planes sit on the tarmac at San Francisco International Airport on July 8, grounded by a computer glitch. Some 3,500 United passengers around the world were delayed. Justin Sullivan/Getty Images hide caption

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Fair goers visit the booth of German car maker Volkswagen at the 66th IAA auto show in Frankfurt am Main, western Germany, on Sept. 22, 2015. German auto giant Volkswagen revealed that 11 million of its diesel cars worldwide are equipped with devices that can cheat pollution tests. Daniel Roland/AFP/Getty Images hide caption

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Breaking bricks is one of the lowest-paying jobs in Bangladesh. This photo was shot at a brick kiln in the Dhaka District, home to the capital city of Dhaka. Paul Joseph Brown hide caption

itoggle caption Paul Joseph Brown