Yolanda Ridge is the author of three books in the Orca Footprints series, What Poo Can Do, Microbes to the Rescue and Beyond Earth, as well as two other juvenile nonfiction titles from Annick Press. She’s also written several middle-grade novels, including two environment-themed titles for Orca Young Readers. She has a master of science degree and is adept at making complex concepts understandable—a skill she uses in her science writing and teaching. She lives in Rossland, British Columbia.