How Come?: Over 175 Questions and Answers About the World Around Us by Kathy Wollard
Firefly light and the aurora borealis. Time travel and tears. Blood types, boomerangs, and black widow spiders. Explanations and investigations. A fact-filled, fun-filled, whimsically illustrated compendium, HOW COME? answers over 100 of the questions more frequently asked about the world around us.