“By the time I started working on this book, all the kids in my life—my six nieces and nephews, my friends’ children, the kids in my neighborhood—knew that I was working on this series. It’s thanks to their interest and suggestions that this book contains so much great information.
“I had a long conversation about snake skins with a third-grader from Lowell, Massachusetts, and a boy I tutor reminded me that polar bears have black skin. Not long ago, a friend’s child asked me why his fingers were wrinkly after a bath. And my nephew insisted that I include noogies.
“But I didn’t steal all the ideas in this book from kids I know. I also read plenty of medical textbooks, journal articles and pieces in popular science magazines. Then I wove together all the fascinating facts to create this book.”