Osama bin Laden. AP hide caption

A Chinese farmer sweeps up dried cobs and stripped corn on a roadside outside Beijing. A new study finds that global production of corn and wheat would have been 5 percent higher if not for global warming. Alexander F. Yuan/AP hide caption

Gadhafi graffiti Peter Breslow hide caption

One of the two known photos of Robert Johnson. This portrait was taken by the Hooks Bros. Photography Company in Memphis, Tenn., circa 1935. Courtesy of the Delta Haze Corporation hide caption

In Pittsburgh, Margaret Pease spreads the message that Judgment Day is fast approaching. Jennifer Jordan/WYEP-FM hide caption

Shania Twain. Maura McEvoy/Courtesy of Mercury Nashville hide caption