Contemporary Art specialist at Christie's, Pilak Ordovas, views 'Balloon Flower' by U.S. artist Jeff Koons in central London June 19, 2008. The sculpture will be auctioned at the end of June and is estimated to sell for approximately 12 million pounds ($23 million). REUTERS/Toby Melville (BRITAIN)

Taking to the skies : A Motocross rider competes in the National Adventure Sports Show in Shepton Mallet, Somerset, in south west England. (AFP/Carl de Souza)

Volunteers pose nude for photographer Spencer Tunick in the grounds of Blarney Castle, Cork, June 17, 2008. You Witness News/Cillian Kelly

An aerial view of the flood devastation in Cedar Rapids, Iowa, June 13, 2008. You Witness News/Ron Mayland

The New York Times building is struck by lightning in New York June 10, 2008. REUTERS/Nic Fulton (UNITED STATES)

People walk past a closed shop during an indefinite strike called by the Gorkha Janmukti Morcha (Gorkha People's Liberation Front), at Kurseong town, about 32 km (20 miles) south of the northeastern hill resort of Darjeeling June 17, 2008. Protesters shut down the famous Darjeeling hills on Tuesday, threatening its tea and tourism industries, as the Gorkha community pressed its demand for autonomy with an indefinite strike. Gorkhas, who are ethnic Nepalis, are demanding a separate state of "Gorkhaland" be carved out of West Bengal to protect their culture and heritage.

REUTERS/Rupak De Chowdhuri

A rainbow greets walkers along the Lewiston Levee after an afternoon shower Monday, June 9, 2008 in Lewiston, Idaho. (AP Photo/Lewiston Tribune, Barry Kough)