NASA says this "blue marble" image is the most detailed true-color image of the entire Earth to date. NASA hide caption

itoggle caption NASA

Former Vice President Al Gore. Jon Kalish/NPR hide caption

itoggle caption Jon Kalish/NPR

Who will be Romney's VP? The naming of his running mate is likely going to come in mid-August, after his foreign trip and the conclusion of the Olympics. Ken Rudin collection hide caption

itoggle caption Ken Rudin collection