Obe Devlin lives with his family in a farmhouse surrounded by subdivisions. He’s just discovered (and named) Marvin Gardens, an odd creature—dog, pig, algae?—that eats plastic refuse discarded in the creek near Obe’s house. Amy Sarig King’s intriguing and timely middle-grade debut Me and Marvin Gardens (Arthur A. Levine, $16.99) succeeds in tackling bullying, family problems, and environmental issues simultaneously. The hopeful conclusion will reaffirm readers’ faith in science and people. Ages 9-12.