SustainabilityThe Evolving Truth about Fracking for Natural Gas [Updated]Scientists speak out about risks, studies and testingBy Mark Fischetti on April 20, 2012Advertisement [View the story "The (Evolving) Truth About Fracking for Natural Gas" on Storify] ABOUT THE AUTHOR(S)Mark FischettiMark Fischetti is a senior editor at Scientific American, overseeing coverage of energy and the environment.Recent ArticlesNormal Body Temperature Is Surprisingly Less Than 98.6Mammals Shrink When Humans Migrate InOnly 150 of Your Facebook Contacts Are Real Friends