What are the health outcomes of CT examinations in children? What are the long-term consequences of radiation therapy in breast cancer patients? What are the outcomes of occupational exposure to radiation? These are just a few of the questions that our team is working on. We are examining the connection between ionizing radiation (such as is used in medical diagnostic procedures) and possible health outcomes such as cancer or cardiovascular disease. However non-ionizing radiation (electromagnetic fields,), such as cell phones or the electricity supply, is also a scientific focus for us.