In January of 2021, a New Jersey teenager brought a piece of an antique Fiestaware plate to a high-school science class. The student had received a Geiger counter, an instrument used to measure radiation, for Christmas, and wanted to do an experiment. When the plate registered as radioactive, someone at the school panicked and called in a hazmat team. The entire school was evacuated, and those in the nuclear science field were aghast. But thousands of similarly radioactive plates and cups can be found in antique stores, thrift shops, and…
