Sumerians Built A Clock That Still Works — And It's Counting Down To Something

Every time you check your phone, you're reading a clock designed over five thousand years ago. The Sumerians gave us the 60-second minute, the 60-minute hour and the 360-degree circle, and the whole world still runs on their system. But hidden inside those numbers is a cycle so vast that no single civilization could ever have watched it unfold. So how did they know about it, and why did they build it into everything they made? Join us as we decode the oldest clock on Earth and uncover what it may be counting down to.