A Pleurosigma, a type of phytoplankton in the ocean. Phytoplankton generate more than half of the Earth's oxygen. Harry Taylor/Nikon Small World hide caption

Some observers say Colombian President Alvaro Uribe, shown delivering a speech at the Police School in Bogota on June 3, may not have been comfortable with his successor's attempt to improve relations with Venezuelan President Hugo Chavez. Guillermo Legaria/AFP/Getty Images hide caption

Scott Burke, owner of Loop Linen and Uniform Service in Westwego, La., says the Gulf oil spill has had an impact on his bottom line. "As the restaurants slow down, we slow down," Burke says. "It's just a trickle-down effect." Tovia Smith/NPR hide caption

Cindy Lohman is seen holding a photo of her son Ryan, who was killed by a bomb in Afghanistan. She says she feels betrayed by Prudential, his life insurance company. Bill Cramer/Bloomberg hide caption

That guy in front of you at the coffee shop might not actually be named "Bob." Joe Raedle/Getty Images hide caption