In "Plentiful Energy," Charles E. Till and Yoon Il Chang unfold the saga of the Integral Fast Reactor (IFR), a groundbreaking nuclear reactor concept developed at Argonne National Laboratory between 1984 and 1994. This compelling narrative not only charts the technical evolution of a reactor designed to address the world's insatiable hunger for energy but also positions the IFR as a beacon of hope for a sustainable, safe, and nearly inexhaustible power source. Through their expert lens, Till and Chang detail the IFR's unique ability to generate electricity, produce new fissile fuel, and minimize nuclear waste within a self-contained cycle, challenging the conventional criticisms of nuclear energy with a pioneering solution. Their account is a rare blend of scientific rigor and accessible prose, offering an enlightening perspective on a technology that stands at the crossroads of humanity's energy future. The abrupt cancellation of the IFR project under the Clinton Administration, just as the program was showcasing its potential, sets the stage for a broader discussion on the intersection of science, policy, and the urgent quest for renewable energy sources. "Plentiful Energy" serves not only as a meticulous record of the IFR development but also ignites a crucial conversation on how advanced nuclear technologies, often mired in controversy and misunderstanding, can play a pivotal role in our planet's energy landscape. Till and Chang, with their first-hand involvement in the project, guide readers through the complexities and promise of the IFR, making a compelling case for reconsidering nuclear power's place in the global effort to combat climate change and energy scarcity. Their book is an essential read for anyone invested in the future of energy, from policymakers to environmental advocates, and underscores the need for open-mindedness in exploring technologies that could profoundly reshape our world.