Why Spacemen Can't Burp

<p><b>The latest collection of terrific trivia from the author of <i>That Book of Perfectly Useless Information</i></b> </p><p>Can rocks have snot? Why do doughnuts have holes in the middle? Could a human child ever be raised by animals? What do hyenas have to laugh about? And why is it impossible to belch after blast-off?! This hilarious book contains the answers to these incredible questions and more that will boggle your brain.</p>