20/20: Crack the Code/Human Memory Machine/The Crowd Rules/Too Little, Too Late

Brian Ross reports on how to read the cryptic code that could potentially save lives, and his hidden camera investigation reveals that many stores across the country are selling old tires. Then, Diane Sawyer talks to a woman who is considered a scientific marvel because she cannot forget. She has the uncanny ability to remember everything. Next, a report on how people are placing bets and trade stocks on Intrade.com, a website set up just like a commodities market, where buying and selling goes on 24 hours a day. Most traders in these markets focus on politics, but there are pop culture bidders as well. Finally, Elizabeth Vargas reports the latest news on from the cyclone that devastated Myanmar.