. . . "Interactive Lerner ebooks"@en . . "Electronic books"@en . . . . "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 eggs will really stand on their ends during the vernal equinox! Discover whether it's true that you can swing 360 degrees on a swing set! See if you can tell the difference between fact and fiction with Is That a Fact'"@en . . "Miscellanea" . . "Does It Really Take Seven Years to Digest Swallowed Gum?"@en . . . "Does it really take seven years to digest swallowed gum? and other questions you've always wanted to ask"@en . "Miscellanea"@en . . . . . . . . "Juvenile works" . . "Juvenile works"@en . . "Does it really take seven years to digest swallowed gum? : and other questions you've always wanted to ask"@en . "Does it really take seven years to digest swallowed gum? : and other questions you've always wanted to ask" . . . . "Does it really take seven years to digest swallowed gum?" . "Presents 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."@en . "This book explores whether there's a factual basis for some of our most common urban legends and features fun facts about the legends through entertaining sidebars." . "Medicine Miscellanea Juvenile literature." . . . . "JUVENILE NONFICTION / Science & Nature / Biology." . . "Medicine." . . "JUVENILE NONFICTION Science & Nature General." . .