Rebecca Donnelly is the author of several books for young readers, including the middle-grade nonfiction title Total Garbage : A Messy Dive into Trash, Waste, and Our World and the Green Earth Award-longlisted title Green Machine: The Slightly Gross Truth about Turning Your Food Scraps into Green Energy . She has an MA in Humanities and a Master's in She holds master's degrees in the Humanities and Library and Information Science. When she's not writing or researching, she's probably hiking somewhere or baking something. rebeccadonnellywrites.com Mercè López is a children's book illustrator based in Mallorca, Spain. Her earliest memories are with a paint brush or pen in her hands while spending time with her sisters. Born and raised in Barcelona, Mercè studied illustration at Llotja Art School. Since then, she has contributed her art to a wide array of titles, reaching from Spanish to other International Publishers.

Mercè's most recent work can be seen in Ben Feller's Big Problems, Little Problems , as well as Irene Latham's The Mistakes That Made Us. mercelopez.com.