Your mouth contains more bacteria than a dog's. Money is covered with germs that can make you sick. The germs in a sneeze travel only an arm's length. You may have heard these common sayings or beliefs before. But are they really true? Can they be proven through research? Let's investigate 17 statements about the microscopic world and find out which ones are right, which ones are wrong, and which ones stump even the experts! Find out whether millions of tiny creatures are living under your bed! Discover whether bacteria cause the common cold! See if you can tell the difference between fact and fiction with Is That a Fact?