PNAS Science Sessions

Brian Fields explores a hypothesis that a supernova may be responsible for a mass extinction.

Eric Horvitz discusses AI's promises and perils.

Juliana Vianna and Rauri Bowie explain the origin and diversification of penguins.

William Nordhaus explains the economic consequences of Greenland ice sheet melt.

NAS member Dalton Conley explains how the Vietnam War draft lotteries are a natural experiment for studying how military service affects life outcomes.

Clark Larsen describes the costs of urban life a Neolithic city.

Mette Svenning and Alexander Tveit describe a bacterium that can live on gases in the air.

Derek Moulton explains the mathematics behind bivalve shell design.

Eelco Tromer and Jolien van Hooff explain the origins of the kinetochore in eukaryotic cells.

Fabiola Gianotti, Marcia McNutt, and Donna Shalala discuss the past, present, and future of women in STEM.