Russell Gold is a reporter for The Wall Street Journal and the author of “The Boom.” The book covers the history of hydraulic fracturing, or fracking, in the United States and the characters who made it what it is today. Gold spoke about the evolving technology of fracking, which has included the use of everything from napalm to nuclear bombs; the controversy about assigning “The Boom” to Penn State freshmen; and Gold’s parents’ story about leasing their land in Sullivan County, Pennsylvania.