It is becoming increasingly obvious that the United States needs reliable and inexpensive energy to propel our economy and protect our national security interests. Game Changers presents five research and development efforts from American universities that offer a cheaper, cleaner, and more secure national energy system. Drawing from the efforts of the MIT Energy Initiative (MITEI) and other leading university research centers, the book describes some of the energy innovations that will transform our future: natural gas from shales, solar photovoltaics,