Melissa Stewart has written more than 200 science books for children, including Tree Hole Homes: Daytime Dens and Nighttime Nooks; the ALA Notable Book Feathers: Not Just for Flying and the SCBWI Golden Kite Honor title Pipsqueaks, Slowpokes, and Stinkers: Celebrating Animal Underdogs. She co-authored 5 Kinds of Nonfiction: Enriching Reading and Writing Instruction with Children's Books and edited the anthology Nonfiction Writers Dig Deep: 50 Award-Winning Authors Reveal the Secret of Engaging Writing. Melissa maintains the award-winning blog Celebrate Science and serves on the Society of Children's Book Writers and Illustrators board of advisors.

Rob Dunlavey is the illustrator of In the Woods by David Elliott, which received three starred reviews, and Owl Sees Owl by Laura Goodwin, which garned four starred reviews and was named a School Library Journal Best Book of the Year, among others. His artwork has been featured in the New York Times, the Boston Globe, Businessweek, and the Los Angeles Times.