This chapter presents and discusses the main features of the risk analysis science, following the basic ideas concerning science described in the previous chapter. The chapter has two main sections. The first gives an overview of the main building blocks for this science, including a list of key pillars or principles linked to the main subject areas of risk analysis: the scientific basis, fundamental concepts, risk assessment, risk perception and communication, risk management and governance, and ‘solving real-life risk problems and issues’, in line with SRA (2017a). We will come back to many of these pillars and principles in the coming chapters, with rationale and discussion. This section also includes some reflections on the importance of establishing this science. The last main section of the chapter, Section 3.2, discusses how this science generates knowledge. We question: what types of research methods are used in risk analysis?