Dr. Hanna Moussa currently works at the Department of Physics & Astronomy, Texas Tech University, USA. He completed his M.S. studies in Physics at the University of Massachusetts at Lowell (1991), and his Ph.D. studies in Nuclear Engineering (Radiological/Health Physics) at the University of Tennessee (2000). His research topics mainly include: External radiation, space radiation, radiation transport and modeling, radiation dosimetry, radiation protection and detection, radiation shielding, nuclear and radiological instrumentations, dose and risk assessment, radiation and cancer, renewable energy, mathematical modeling, and medical imaging. His most recent publication is ‘Protective properties of n-3 fatty acids and implications in obesity-associated breast cancer’.