Dr. Ray Dorsey video chats with his patient, Victor Jarzombeck, from his office at Johns Hopkins Medical Center in Baltimore. Dorsey has been treating Jarzombeck, who lives nearly 350 miles away in New Hartford, N.Y., for three years. Maggie Starbard/NPR hide caption

itoggle caption Maggie Starbard/NPR

Union College psychology professor Chris Chabris and his students staged an outdoor fight to study inattentional blindness. Matt Milless/Union College hide caption

itoggle caption Matt Milless/Union College

A man carries his son at a Beijing park. China's one-child policy has been blamed for the current gender-imbalance in China, where sex-specific abortions remain common. Frederic J. Brown/AFP/Getty Images hide caption

itoggle caption Frederic J. Brown/AFP/Getty Images