Aleix Martinez explains why facial expressions often are not accurate indicators of emotion.

Amanda Rodewald, Ivan Rudik, and Catherine Kling talk about the hazards of ozone pollution to birds.

Se-Jin Lee and Emily Germain-Lee explain a way to preserve bone and muscle mass during spaceflight.

David Crowder and Gengping Zhu explain how to predict the spread of the Asian giant hornet.

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.