U.S. Rep. Paul Ryan, R-Wis., right, hears from a constituent during a "listening session" Tuesday at Gateway Technical College in Kenosha, Wis. Ryan's plan to fundamentally restructure Medicare and cut social safety net programs has proved to be a tough sell to many Republican voters the last few weeks. Jeffrey Phelps/AP hide caption
Pork is sold in a market in Beijing. PETER PARKS/AFP/Getty Images hide caption
Many children with autism don't receive a diagnosis until they are five or even older. iStockphoto.com hide caption
The armadillo is the only animal, besides humans, that is known to carry leprosy-causing bacteria. Richard Anderson/Flickr hide caption
Most doctors surveyed said they think visits to emergency rooms will increase as the new health law is implemented. iStockphoto.com hide caption
Jamie Oliver during a scene filmed in Los Angeles from the second season of "Jamie Oliver's Food Revolution" on ABC. Mitch Haddad/AP hide caption
Test tubes for insulin. Neil Brake/Vanderbilt Medical Center hide caption