How to identify the most sought-after 1932 coin in the United States. More information: The most patriotic town in the United ...

or ancient ruins, could save flowers. The explanation, it seems, lies in copper’s chemistry. “The copper found in old coins is a natural fungicide that can help keep bacteria at bay ...

Buried below the ancient ruins is a lode of copper ore ... of Siddhartha Gautama before he became the Buddha. Cascades of copper coins from the third to seventh centuries A.D. have also spilled ...