Agnieszka Biskup is a science writer and editor based in Chicago. She is a former editor for the science section of the Boston Globe as well as the children's science magazine Muse. In addition to children's books, she has also written many articles for newspapers, magazines, and websites. Her books have received awards from Learning magazine, the Association of Educational Publishers, and the Society of School Librarians International. Her book Football: How It Works (Capstone Press, 2010) was a Junior Library Guild selection. Marcelo Baez is a professional illustrator and designer who has worked for international clients such as Microsoft, ESPN Magazine, Dallas Observer, The Weekend Australian Magazine just to name a few.