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PNAS Profile of NAS member Eugene Koonin.

Front Matter

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  • News Feature: Radiation redux
    Could traditional radiation treatments work in concert with immunotherapy to mount a more effective assault on cancer? Image courtesy of Shutterstock/John Panella.

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  • Inner Workings: Listening in on the deep sea
    As part of the growing practice of passive acoustic monitoring, marine scientists are using underwater sound recording devices to hear the animals they often can’t see—and advance conservation in the process. Image courtesy of Flickr/National Oceanic and Atmospheric Administration.

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  • Backbone configuration in Australopithecus
    Analysis of a 3.3 million-year-old Australopithecus afarensis skeleton from Ethiopia provides evidence that this early hominin had 12 thoracic vertebrae like modern humans and unlike extant African apes.
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