Researchers study a small group of patients who underwent surgery that split their brains: Through studies of this group, neuroscientists now know that the healthy brain can look like two markedly different machines, cabled together and exchanging a torrent of data. But when the primary cable is severed, information — a word, an object, a […]
nature
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In the 1940s, U.S. doctors led experiments that intentionally infected thousands of Guatemalans with venereal diseases. A closer look at how it happened, and who knew: John Cutler, the young investigator who led the Guatemalan experiments, had the full backing of US health officials, including the surgeon general. “Cutler thought that what he was doing […]