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

Bob Lewis contracted a rare fungal disease called Crytococcus gattii in 2007 that is spreading through the Pacific Northwest. He and his wife, Joan, live in Portland, Ore. Jane Greenhalgh/NPR hide caption

itoggle caption Jane Greenhalgh/NPR