Nessa Carey, The Epigenetics Revolution: How Modern Biology Is Rewriting Our Understanding of Genetics, Disease, and Inheritance (New York: Columbia University Press, 2012); Richard C. Francis, Epigenetics: How Environment Shapes Our Genes (New York: Norton, 2012); Paul Tough, “The Poverty Clinic: Can a Stressful Childhood Make You a Sick Adult?” New Yorker, March 21, 2011; Stacy Drury, “Telomere Length and Early Severe Social Deprivation: Linking Early Adversity and Cellular Aging,” Molecular Psychiatry 17 (2012): 719–27; Jonathan D. Rockoff, “Nature vs. Nurture: New Science Stirs Debate: How Behavior is Shaped; Who’s an Orchid, Who’s a Dandelion,” Wall Street Journal, September 16, 2013.