The Science of Middle-Earth: A New Understanding of Tolkien and His World. Edited by Roland Lehoucq, Loïc Mangin, and Jean-Sébastien Steyer; illustrated by Arnaud Rafaelian; translated by Tina Kover. New York: Pegasus Books. $29.95. xxiii + 392 p.; ill.; no index. ISBN: 978-1-64313-616-5. 2021.