The Akron Police Department training class works out at Kent State Basic Police Officer Training Academy. Donald Clayton is the only African-American in the class of 20. M.L. Schultze/WKSU hide caption

Leaks in a barrier between blood vessels and brain cells could contribute to the development of Alzheimer's. VEM/Science Source hide caption

Bradley Cooper stars in American Sniper, based on the life of Navy SEAL Chris Kyle. Warner Bros. hide caption

Pakistani soldiers escort students as they leave the Army Public School in Peshawar on Jan. 12. The school has reopened after last month's attack by the Pakistani Taliban that killed more than 130, most of them teenage students. A Majeed/AFP/Getty hide caption

The company behind the ubiquitous SkyMall in-flight catalog is filing for bankruptcy. Jenni Konrad/Flickr hide caption

New Jersey Gov. Chris Christie, seen here at the inauguration of Iowa Gov. Terry Branstad, will attend the Iowa Freedom Summit. Charlie Neibergall/AP hide caption

Auto dealers are extending loans to a growing number of people with weak credit. Joe Raedle/Getty Images hide caption

Dominic Ongwen, a Ugandan commander in warlord Joseph Kony's feared militia, waits for procedures to start at the International Criminal Court in The Hague, Netherlands, on Jan. 26. Peter Dejong/AP hide caption

Frank Sinatra captured by photographer William "PoPsie" Randolph during a 1943 concert. Author Ben Yagoda points to Sinatra as one of the interpreters who helped revive the Great American Songbook. William "PoPsie" Randolph/Courtesy of Riverhead hide caption