The discovery of fire and the origin of the wheel are two of the most important things to happen in the history of the world. For many years, people thought the wheel dated back roughly 6,000 years. In 4000 BC, it was used to make pottery in Mesopotamia. Then, 500 years later, it was adapted for transportation during the Bronze Age. But now, scientists think their timeline needs to be corrected. They think they’ve found even earlier examples of the wheel dating back not 6,000 years but 12,000 years. I’m fascinated by the men and women who devote their lives to unraveling these mysteries. I’d like to know what their payoff is…