Snapshots: The world in 24 hours, June 4

Britain's Queen Elizabeth (L) and Prince Edward watch the winners enclosure after her horse lost in the Epsom Derby at Epsom Racecourse in southern England June 4, 2011. [Photo/Agencies]

A boy swims in the Ganges River in Kolkata June 4, 2011. The World Environment Day is annually observed on June 5. [Photo/Agencies]