“Fifth Branch: Science Advisers as Policymakers” by Sheila Jasanoff is a textbook published by Harvard University Press in 1998. This book examines the role of science advisors in policymaking, specifically focusing on the intersection of science and political science. With a subject area covering public policy and science & technology policy, this trade paperback provides insights into the complexities of decision-making processes in these fields. The author’s expertise in the subject matter is evident in the 318 pages of informative content presented in English language.