An aerial picture taken aboard an helicopter on July 20, 2010 shows a smoggy view of the Eiffel tower (L) and the Tour Maine-Montparnasse in Paris. AFP PHOTO BORIS HORVAT (Photo credit should read BORIS HORVAT/AFP/Getty Images)
An aerial picture taken aboard an helicopter on July 20, 2010 shows a smoggy view of the Eiffel tower (L) and the Tour Maine-Montparnasse in Paris. AFP PHOTO BORIS HORVAT (Photo credit should read BORIS HORVAT/AFP/Getty Images)