Mike Kasavich, a lifelong coal miner, exits "the hole" after a 10-hour morning shift at the Mathies coal mine in western Pennsylvania. Black lung disease is increasing among miners, yet they are struggling to get disability reimbursement for the illness. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images

Steve Kitchin demonstrates his prototype invention. With the touch of a button, he simply backs his wheelchair in, and the elevator-like lift raises it up and slides him into the cab of the truck. Erika Celeste for NPR hide caption

itoggle caption Erika Celeste for NPR

These human lung samples show (from left) a normal lung, a lung with mild pneumoconiosis or "black lung" and one with complicated pneumoconiosis. NIOSH hide caption

itoggle caption NIOSH

Aspiritech, a nonprofit in the suburbs of Chicago, trains people with Asperger's syndrome in data entry and computer program testing — skills that come naturally to many with the disorder. iStockphoto.com hide caption

itoggle caption iStockphoto.com