Anton Adassinsky, front, artistic director of the Russian dance theater company Derevo performs a scene from their latest piece, "Ketzal II Noah's Ark" during a photo rehearsal in Dresden, Germany, April 3, 2012. (Matthias Hiekel/EPA)

Kansas forward Thomas Robinson (0), guard Tyshawn Taylor (10) and forward Kevin Young, left, are shown after their NCAA Final Four tournament college basketball championship game, April 2, 2012, in New Orleans. Kansas was defeated by Kentucky, 67-59. (Mark Humphrey/AP Photo)

A rescued pit bull catches drops of water from a volunteer of the Philippine Animal Welfare Society (PAWS), April 3, 2012, at a coffee farm lot in San Pablo city, Laguna province, south of Manila, Philippines. Dozens of pit bulls rescued from a dogfighting ring will be put down because there are no facilities to rehabilitate them and prevent them from being used again in underground arenas. (Bullit Marquez/AP Photo)

A ladybug in flight spreads its wings as it flutters over blades of grass at Rooks Park in Walla Walla, Wash. April 2, 2012. (Jeff Horner/Walla Walla Union-Bulletin/AP Photo)

Two trucks lie on their sides on a bridge in Toyama city, western Japan. April 3, 2012. A typhoon-like spring storm brought strong gusts and heavy rains to Japan, causing traffic chaos, with meteorologists urging the public to stay indoors if possible. (Jiji Press/AFP/Getty Images)

A woman views a plastinated gorilla in the "Animal Inside Out" exhibition at the Natural History Museum, April 3, 2012, in London. The exhibition features approximately 100 plastinate and capillary specimens displaying their anatomical structure. (Oli Scarff/Getty Images)

Colombian Army Sgt. Luis Alfonso Beltran Franco waves after arriving at the airport in Villavicencio, Colombia, April 2, 2012. He was among 10 hostages released by the Revolutionary Armed Forces of Colombia, or FARC, after at least 12 years of captivity in the jungle. (Mauricio Duenas/EPA)

Sheep huddle together in a field near the Spittal of Glenshee, April 3, 2012, in Glenshee, Scotland. Snow has returned to parts of Scotland just a week after the country experienced record high temperatures for March. (Jeff J. Mitchell/Getty Images)

Supertrees, which serve as vertical gardens, stand tall in the almost completed Gardens by the Bay, April 3, 2012, in Singapore. It was a part of the city-state's efforts to bring and nurture greenery within the city and capture the essence of Singapore as a tropical city. (Wong Maye-E/AP Photo)