Dr. Jess Wade is an award-winning physicist specializing in plastic electronics and a trailblazing campaigner for inclusion in STEAM fields. The author of Nano: The Spectacular Science of the Very (Very) Small , she won the Early Career Physics Communicator Award and Jocelyn Bell Burnell Medal for her outstanding research and widely covered activism, which includes writing more than 1,200 Wikipedia pages in a year for women and people of color working in science. Dr. Jess Wade lives in London. Ana Sanfelippo is an Argentinian illustrator, graphic and pattern designer, and letter artist whose books for young readers include the SEN Superpower series by Tracy Packiam Alloway. She lives in Madrid.