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    • Katsuhiko Hayashi

      Katsuhiko Hayashi

      Time Magazine· 15 hours ago

      Your biology teacher may have told you that female mammals produce eggs, males make sperm, and the two combine to create an embryo. Katsuhiko Hayashi, a...

    • TIME100 Health: Stuart Orkin

      TIME100 Health: Stuart Orkin

      Time via AOL· 15 hours ago

      Stuart Orkin didn’t set out to develop a historic treatment for sickle cell disease 45 years ago when he decided to study how blood cells formed. He...