There were Seven Wonders of the Ancient World, including two in Egypt: the Great Pyramid of Giza and the Lighthouse of Alexandria. You’ve probably heard of the pyramid - because it’s still standing - but the ruins of the lighthouse are underwater. For artist Ellie Ga, tracking down its remains became a quest of discovery.
On the grassy lawn near the Federal Reserve Bank in Kansas City, trucks are hauling cargo shipping containers to be unloaded and stacked into a towering, temporary sculpture. One hundred and five containers, piled almost seven stories high, will spell out IOU on one side and USA on the other. It's a nod to this country's increasing federal budget and foreign trade deficits.