This book looks at how science investigates the natural world around us. It is an examination of the scientific method, the foundation of science, and basis on which our scientific knowledge is built on. Written in a clear, concise, and colloquial style, the book addresses all concepts pertaining to the scientific method. It includes discussions on objective reality, hypotheses and theory, and the fundamental and inalienable role of experimental evidence in scientific knowledge. This collection of personal reflections on the scientific methodology shows the observations and daily uses of an experienced practitioner. Massimiliano Di Ventra also examines the limits of science and the errors we make when abusing its method in contexts that are not scientific, for example, in policymaking. By reflecting on the general method, the reader can critically sort through other types of scientific claims, and judge their ability to apply it in study and in practice.