Does It Really Take Seven Years to Digest Swallowed Gum?: And Other Questions You've Always Wanted to Ask

It takes seven years to digest swallowed gum. A penny placed on a train track can cause a train to derail. The average human consumes four spiders per year while sleeping. You may have heard some of these common sayings or beliefs before. But are they really true? Can they be proven using science? Let's investigate seventeen statements about familiar items and everyday events and find out which ones are right, which ones are wrong, and which ones still stump scientists! Find out whether egg...