Written by a leading scholar, this essential introduction to the history of energy traces one of humans' most basic ecological interactions: energy exchange. From fire to agriculture, water wheels to electric dynamos, the rise in intensity led humans to define a new "high energy" existence during the twentieth century. Industrialization and consumption increased the connection between energy and economic and political power, clarifying its importance throughout the world wars and into the Cold War. To Have and Have Not reveals a world in which energy supply now defines global standing, starkly revealing the connection between history and current events that perfectly situates our modern conundrum of a future without fossil fuels. Climate change and the supply of sustainable energy now permeates our modern policy making as we bear witness to the waning years of energy borrowed from the distant past. Brian Black argues that our history of growing energy reliance and past transitions is essential context for understanding our inevitable shift to cleaner energy. Placing this story within the current, rapidly changing historical discourse, this book is timely and persuasive as it lays out our current transition from fossil fuels.