Not only was Cleopatra's Roman lover and protector Julius Caesar murdered in 44 B.C., but the world itself seemed to have turned against her. Ominous celestial visions filled the skies, and Egypt became gripped by drought, famine, and disease. New evidence found in Greenland's ice sheets suggests the fall of ancient Egypt shouldn't entirely be linked to Cleopatra; it may have been hastened by a colossal volcanic eruption. Climate scientists and Egyptologists join forces to find out if a supervolcano ended the ancient Egyptian Empire in 44 B.C.