Nicolson, Cynthia Pratt

Studies comets, asteroids and meteorites and answers such questions as what they are made of, how comets are predicted, and how big asteroids are, and includes projects designed to help children learn more about them.

Presents a simple explanation of genetics and cloning, including recent cloning experiments such as the cloning of Dolly the sheep.

Explains the evolutionary reasons for a variety of human behaviors, such as burping, seeing colors, liking music, sleeping, and more.