Catherine Stier is the author of more than 20 children's books including the Science Makes it Work picture book series and the Kirkus star-reviewed A Dog's Day chapter book series. She holds a master’s degree in reading and literacy and has served as a magazine writer, newspaper columnist, and writing instructor. Stier resides in San Antonio, Texas.
Floss Pottage studied illustration at Norwich University of the Arts and now lives and illustrates on a ship named Iolanthe in Warwickshire, United Kingdom. She loves spending time outdoors and takes inspiration from the canal and countryside around her. Her curiosity about science and how things work fuels her illustrations and the characters she creates.