As a kid, I always thought there were little men under the streets changing lights from red to green and turning on the street lights (sadly, I'm not kidding. But, come on, where did you think that quarter under your pillow came from when you lost a tooth?). I also thought if you slap someone on the back while they're making funny faces or crossing their eyes it would stay that way. (I still refuse to stand to close to the microwave while it's running.) Most of us have some quirky thing we just know to be true... yawns are contagious, reading in the dark damages your eyes, chicken soup cures a cold. But, has anyone ever tried to find out if it's true? Yep... And there's a whole book about it, called Never Shower in a Thunderstorm: Surprising Facts and Misleading Myths About our Health and the World we Live In. Are oysters aphrodisiacs, does green tea help you lose weight, is bottled water cleaner than tap water, can toothbrushes spread germs, is it dangerous to talk on the phone in a thunderstorm? What were you always told, and still wonder if it's true?