“Mr. Brennan answers a lot of questions you felt too foolish to ask. Knowing the answers is important to your future.”
—The New York Times
“A book that’s clear of head, yet light of heart, chatty and comprehensive.”
—The Philadelphia Inquirer
“Brennan’s writing is clear and conversational, and he doesn’t just tell readers what scientists know, he explains how they know it.”
—The Detroit Free Press
