A recent study by Clemson University questions the scientific validity of the "Five-Second Rule." The frequently cited rule claims that so long as dropped food is picked up off the floor in five seconds, it is OK to eat. Guests and callers discuss the many caveats to this less-than-foolproof approach to food safety.
Monica Hesse, author, "That Dropped Doughnut: How Soon, and How Often, Will It Come Back Up?", published in the Washington Post