Sometime between the ages of nine and fifteen, children's bodies begin to change and grow into adult bodies - and with these changes comes a natural curiosity about sex and sexuality. This book gives the facts - biological and psychological - of sex: from conception and puberty to birth control and AIDS, including sections on the body, families and babies, and sexual health. The book's approach is simple, with cartoon illustrations and the speech-bubble comments of two characters, a curious bird and a squeamish bee, which reflect the diverse feelings children have about sex.