Two 500-year-old mummies confirm Europeans brought smallpox to the Americas: ‘It came from the Old World’
The oldest virus samples found on American soil had already fully adapted to humans
Pedro Cuatrecasas, the scientist nobody has heard of who could have won two Nobel Prizes
The biochemist, who died at 88 in La Jolla, California, transformed the lives of millions after participating in the development of 40 new drugs, including the best-selling one in history
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