This group of athletes has garnered international fame by doing what they do best. Come along as we get to know the globe-trotting superstars David Beckham, Serena Williams, Mike Tyson, Michael Phelps, and more of those who dominate their sport. watch
Dec. 4: Making a Difference: Using equipment collected from U.S. hospitals, Project C.U.R.E. is helping doctors to bring routine procedures from America to places like Ethiopia. NBC's Michael Okwu reports. watch
