What keeps the stars from falling from the sky? Why do metal boats float? And more importantly, why don't cars run on apple juice?! All these questions and more are found in the pages of this science Q & A book with questions from the most inquisitive of science center visitors--kids. With help from a slew of scientists, author Kira Vermond serves up the answers to more than 50 quizzical queries in a fun and engaging style.