♪ >> real quick some breaking news to report, our producers told me that actually, t.j. stands for tito joe after joe the patriarch of the family, not, not tito jr. of the family, not tito jr. wanted to be clear on that. now we can move on. the opening ceremonies of the olympic are just hours away. by the way, you should get a gold medal for clarifying that, okay, wound its way through london. end of an 8,000-mile journey. now it will be the athletes' turn, and bill weir and secrets of the science behind your favorite hot olympic stars. >> reporter: exhibit a, michael phelps. first he was born with ridiculously long arms. stand imposing 6'4", his wing span is 3 inches longer and uses