Oprah first met Greg Smith in 1999, when he had an IQ so high, it couldn't even be measured.
Today, 21-year-old Greg has two masters degrees and is currently studying for his PhD at Carnegie Mellon University.
Get the advice you need to stop dieting and become more aware of what you're eating and how you're eating it.
Oprah Radio host Jean Chatzky talks with Mandy Walker of Shop Smart magazine about the best times to buy certain things.
On the final talented kids showcase, Oprah and co-host Willow Smith meet more of the world's smartest, most talented children.
OWN announces April 4 premiere of Kidnapped By The Kids, an original series that helps kids convince their workaholic parents to spend more time at home.