Dr. Alex Dromerick co-directs the Brain Research Center at the National Rehabilitation Hospital. Here he observes Stephen Jones, a policeman who was involved in a motorcycle accident. Becky Lettenberger/NPR hide caption

Researchers at the window testing facility at Lawrence Berkeley National Laboratory are developing nanocrystal technology. When activated by a small electrical current, it would allow light but not heat through. Courtesy Lawrence Berkeley National Laboratory hide caption

Ken Russell (1927-2011) accepts a BAFTA in 1969 for creative contribution to television. Central Press/Getty Images hide caption

Sobhi Saleh (right), a senior member of the Muslim Brotherhood and a candidate for parliament, speaks to voters at a polling station in Alexandria, Egypt, on Monday. The Brotherhood is expected to make a strong showing in the polls. Tarek Fawzy/AP hide caption

Officer Tom Merenda talks to John Fager, one of the dozens of residents living in an assisted-living facility in Cannon Point. Kenny Malone for NPR hide caption

Cass Sunstein is the director of the Office of Information and Regulatory Affairs. A new study finds that the office has altered more federal regulations under President Obama than it did under George W. Bush. AP hide caption

Adam Levine (center) and the rest of Maroon 5. Matt Beard hide caption