Athletes prepare for 2008 Summer Olympic Games in Beijing

American swimmer Michael Phelps practices at the National Aquatic Center, also know as the Water Cube, in preparation for the 2008 Summer Olympics in Beijing, China, on August 5, 2008. Phelps is in the running for a record eight gold medals. Opening Ceremonies will be held on August 8. (UPI Photo/Roger L. Wollenberg)