Sanitary workers, who spray pesticide to kill ticks carrying encephalitis, are reflected in a transparent fence at the Bobrovy Log resort area in Taiga outside Russia's Siberian city of Krasnoyarsk, May 27, 2011. [Photo/Agencies]

Cuban National Ballet dancers practice during a rehearsal in Havana, May 27, 2011. The Cuban National Ballet heads to the United States next week for a month-long tour that director and ballet legend Alicia Alonso hopes will bring happiness to US-Cuba relations that have been unhappy for half a century. The tour is the latest in a series of cultural exchange that began after US President Barack Obama took office as the longtime ideological foes seek common ground they have been unable to find politically since Cuba's 1959 revolution. [Photo/Agencies]