Children react after being enclosed in a large soap bubble by Canadian bubble artist Fan Yang during "The Gazillion Bubble Show" in Beijing, July 31, 2011. Yang has performed with soap bubbles to audiences around the globe over the past two decades. [Photo/Agencies]

Canadian bubble artist Fan Yang performs during "The Gazillion Bubble Show" in Beijing, July 31, 2011. Yang has performed with soap bubbles to audiences around the globe over the past two decades. [Photo/Agencies]