Investigate the explosive growth of Macau as the gambling capital of the world.
Investigate the health crisis that threatens NFL players and the long-term fortunes of football.
Follow health officials tracking the deadly Ebola outbreak and trying to stop its rampant spread.
As an NFL super agent, Leigh Steinberg saw it all, especially when it came to injuries. But of all the hard hits he ever witnessed, there was one that especially frightened him: Troy Aikman's concussion.