Book Review: <i>The Psychology of Collective Climate Action: Building Climate Courage</i> by Hamann Karen, Junge Eva, Blumenschein Paula, Dasch Sophia, Wernke Alex and Bleh Julian KarenHamannEvaJungePaulaBlumenscheinSophiaDaschAlexWernkeJulianBlehThe Psychology of Collective Climate Action: Building Climate Courage, New York: Routledge, 2025. ISBN: 978-1-0329-0528-0 (PB). $38.39.244pp.