Pnas Science Sessions

Theoretical physicists Hans Briegel and Hendrik Poulsen Nautrup describe an artificial intelligence that can design quantum experiments.

Simon DeDeo and Alexander Barron discuss the rhetoric that shaped the French Revolution.

Cam Braun explains how ocean eddies allow sharks to dive and forage in deep water.

Shara Bailey explains the significance of a three-rooted lower molar in an archaic jaw.

Noel Clark and Tommaso Bellini describe how nucleic acids form double-helical liquid crystals, with implications for the origins of life.

Benjamin de Haas explains individual differences in eye movement patterns.

Eric Boilard explains the role of serotonin and platelets in immune responses.

A collection of research articles explores developments in interfacial transport and mixing, with wide-ranging practical applications.

Jennifer Mandel outlines the evolutionary history of the sunflower family.

Jonathan Lefcheck and Robert Orth discuss nutrient pollution and recovery in the Chesapeake Bay.

Daniel Hodgson explains the physics of chocolate-making.

Chris Field discusses misconceptions about climate change and how humans can adapt to a warming planet.

Noah Diffenbaugh and Marshall Burke discuss how global warming impacts economies and income inequality.  

Margaret McFall-Ngai describes how a symbiont bacterium affects a host cephalopod.

A paleontological site preserves the immediate aftermath of the asteroid impact that may have caused a global mass extinction.

Thor Berger and Per Engzell explore connections between European immigration and present-day economic mobility in the US.

Erin Cech discusses parenting and gender disparities among STEM professionals.

Bettina Schulz Paulsson explains the origin and spread of Europe's megaliths, including Stonehenge.

Daven Henze discusses how air pollution spreads across the globe and what policymakers are doing in response.

Tetsuto Miyashita describes how the hagfish helps define the vertebrate tree of life.