Scientists Probed a Medieval Alchemist’s Artifacts—and Found an Element That Changes History

These days, we would call them proprietary blends. But in the late 1500s and early 1600s, individual alchemists called the ...

Archaeologists Broke Open the Great Wall of China—and Found a Treasure Trove of Artifacts

The discovery’s highlight was a 247-pound cannon from the Ming dynasty, but archaeologists also found remains of crops and ...