By Erika Check Hayden -
Growing up in the college town of Ames, Iowa, during the 1970s, Stephen Hsu was surrounded by the precocious sons and daughters of professors. Around 2010, after years of work as a theoretical physicist at the University of Oregon in Eugene, Hsu thought that DNA-sequencing technology might finally have advanced enough to help to explain what made those kids so smart. He was hardly the first to consider the genetics of intelligence, but with the help of the Chinese sequencing powerhouse BGI in Shenzhen, he planned one of the largest studies of its kind, aiming to sequence DNA from 2,000 people, most of whom had IQs of more than 150.
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