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

Paul Law, director of the Interactive Autism Network, and his wife, Kiely Law, changed the direction of their careers after having a child with autism. IAN seeks to facilitate research on autism spectrum disorders. Gail Burton/AP hide caption

itoggle caption Gail Burton/AP

Researchers say it's not just loose skin that makes us look old; it's our bones. These skulls from the Smithsonian Museum of Natural History show the loss of definition in the lower face. Nate Lavey/NPR hide caption

itoggle caption Nate Lavey/NPR