Ruth Spiro is the author of the best-selling Baby Loves Science series, which has been praised for introducing "big science to little minds with the skill of a neurosurgeon" (Matthew Winner, All the Wonders podcast).

Ruth also wrote the picture book Made by Maxine. She speaks regularly at STEM and early-childhood conferences across the country.

Greg Paprocki works full-time as an illustrator and book designer. He has illustrated several Curious George books, as well as The Big Book of Superheroes. He began his career as an advertising art director after studying fine art and graphic design at the University of Nebraska.