For centuries archaeologists and explorers have been obsessed with locating ancient cities lost to time. Some of these places are recorded in historical texts, while others are part of oral traditions and folklore. How does a once-thriving community become a lost city? And if their ruins are found, what secrets might be they reveal about human history?

Throughout history, every major civilization has believed in curses, and their power to inflict harm on the unsuspecting. Today, many people are still afraid of walking into a cursed place or touching a reportedly-cursed object. But if curses are real then what brings them into existence? And how are they triggered?