PNAS is one of the world’s most-cited and comprehensive multidisciplinary scientific journals, publishing more than 3,500 research papers annually. As the flagship peer-reviewed journal of the National Academy of Sciences (NAS), PNAS serves as an authoritative source of high-impact, original research that spans the biological, physical, and social sciences, with global reach and open submission to researchers worldwide.
Northwestern researchers scanned thousands of federal grant proposals for signs of chatbot writing. Moving from light to heavy AI involvement came with a four-point rise in the chance of NIH funding. It also came with ideas that were closer to what the agency had recently funded. At NSF, neither pattern appeared.
Two studies published days apart test how well artificial intelligence explains human reading. Language models match the forward glide of our eyes but fail on rereading. A second model, trained to budget its attention like a person, gets much closer.
Vipers make serum proteins that neutralize their own venom. Combinations of them fully blocked the lethal action of three viper venoms in mice, partly blocked two more, and did nothing at all against the African puff adder.