nMarc ter Horst studied literature but soon found himself more interested in geology, astronomy, and evolution. He has written several nonfiction books for kids, which have been translated into many languages, including Palm Trees at the North Pole. He lives in the Netherlands.n nWendy Panders is an illustrator and graphic designer for magazines and newspapers and has illustrated many childrens books. She lives in the Netherlands.n nDr. Jennifer Gardy is a scientist who has worked at the British Columbia Centre for Disease Control and is now part of the Bill & Melinda Gates Foundations Malaria team. She appears frequently on television programs such as CBCs The Nature of Things and the Discovery Channels Daily Planet. She lives in Chicago.n