What is a radiation oncologist? What does he or she do?Meet Karen, a kid like you and me, who grew up wanting to become a professional singer. Then she discovered that singing and the science of the human body are related. She then fell in love with science and medicine and became an oncologist. Learn how Karen uses X-rays to help people with breast cancer, how she works to find ways to reduce some of the side effects that make X-ray treatments for cancer painful for some patients, and how she works to help others become doctors and scientists.The Who Me? series features inspirational...