Peter Sturrock, Stanford University (IMAGE) Stanford University Caption When researchers found an unusual linkage between solar flares and the inner life of radioactive elements on Earth, it touched off a scientific detective investigation. Stanford's Peter Sturrock and researchers from Purdue University believe they've solved some of the mystery, although opening one door leads to others. Credit L.A. Cicero, Stanford News Service Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.