Nathaniel Kleitman, known as the "father of modern sleep research," was born in 1895 in Bessarabia -- now Moldova -- and spent much of his youth on the run. First, pogroms drove him to Palestine; then the First World War chased him to the United States. At the age of twenty, he landed in New York penniless; by twenty-eight, he'd worked his way through City College and earned a Ph.D. from the University of Chicago. Soon after, he joined the faculty there. An early sponsor of Kleitman's sleep research was the Wander Company, which manufactured Ovaltine and hoped to promote it as a remedy for insomnia.