...not leave behind a wake of environmental destruction from energy consumption or require more than one planet on which to live?” Image Credits: Richard Cavalleri/Shutterstock.com; ESB Professional/Shutterstock.com; Pradit.Ph/Shutterstock.com; Nuk2013/Shutterstock.com; xuanhuongho/Shutterstock.com....

...variety of purposes. For example, extractive industries producing fuels such as coal, uranium, oil, and gas use water for flushing fluids out of the ground, controlling dust at mines, or...

One approach to solving the interdependency of energy and water is to develop water-lean energy systems. For example, as noted earlier, newer, more efficient natural gas combined-cycle power plants release...

...of UPW every day, which is approximately equivalent to the water use of a city with a population of 40 to 50 thousand people. Image Credits: Peter de Kievith/Shutterstock.com; RaJi/Shutterstock.com....

...saline, gray water, and treated effluent, which despite being nonpotable can be used in certain industrial and agricultural applications, to spare freshwater. Image Credits: Alexander Kirch/Shutterstock.com; Firma V/Shutterstock.com; Johan Larson/Shutterstock.com....

...the Price of Optimism,” Time Magazine, August 1, 1969, accessed August 26, 2016, http://content.time.com/time/magazine/article/0,9171,901182,00.html. Almost exactly one month later, the first mission to the moon successfully landed. Photographs taken from...

...such as irrigation and washing cars. Many municipalities use purple pipes to provide a visual clue that the effluent is not potable. Image Credits: Alistair Scott/Shutterstock.com; Evelyn Sugar/Shutterstock.com; Robert Schlie/Shutterstock.com....

One can measure energy across a variety of different scales. For example, power is the rate of energy production or the rate of energy consumption, which is measured in watts...

...fuel cells avoids the formation of pollutants such as nitrogen oxides. Microturbines release similar emissions as a natural gas combined-cycle power plant but with the performance advantage that the gas...