An overview of the different approaches to cancer risk assessment of environmental factors ? including ?–omics? technologies, discussing the strengths and weaknesses of the methods in different fields. The main focus is on the carcinogenic effects of ionizing and non–ionizing radiation, demonstrating the difficulties in accurately assessing those factors that may or may not pose a significant cancer risk. The book extends the view to a broader context of risk assessment, highlighting various aspects of risk management. Written by leading experts in the field, this is a resource for policy makers and professionals in health risk assessment, and public health workers, as well as oncologists and researchers in academia.