Six things we learned about the world's fastest swimmer from his E! reality TV trailer.
In women's and men's medley relay.
By a fingertip.
Michael Phelps will open Olympic competitions Saturday. John D. Barrow explains how a slick suit used to give swimmers an unfair edge.
The beach may be beautiful, but for old-time glamour there's nothing like highballs at the pool. See vintage photos.
After 29 hours in the water.
In chilly Wales for cancer cure.