The Delivery Man (2015)

Episode Overview

NOVA explores the journey of a dedicated group of volcanologists on a quest to uncover the mystery behind a massive volcanic eruption that caused a severe climate shift in medieval times. Their investigation focuses on identifying the distinctive markers of an eruption powerful enough to release vast quantities of ash and sulfuric acid into the atmosphere, resulting in a global cool-down that transformed summer into winter. This captivating expedition takes them around the world as they piece together the evidence of this dramatic geological event.