Medici family mystery may be solved after more than 400 years

By Jacopo Prisco, CNN (CNN) — Since the mysterious deaths of a husband and wife in the Medici family, a powerful Italian dynasty that ruled Florence and Tuscany almost uninterruptedly from 1434 to 1737, rumors have swirled about what led to the couple’s untimely demise. Now, scientists believe they have an answer — it wasn’t