Tuesday, Sep. 25, 2007 | The Kojo Nnamdi Show

It's an emerging marketplace, worth billions of dollars, and many Americans don't even know it exists. In virtual worlds like "Second Life" or "World of Warcraft," members buy and sell everything from clothes to real estate for their...

He was the athlete who ushered in the era of free agency and million dollar contracts. In 1969, Curt Flood challenged the right of his baseball team to trade him, setting up a legal showdown that would reach the Supreme Court. We explore...