Pnas Science Sessions

Yatrik Shah describes the connection between maternal iron absorption during lactation and neonatal anemia.

Sangeeta Bhatia describes the development of nanoparticles that can aid in detecting cancer and other diseases.

Stanislas Dehaene investigates how certain areas of the brain might be related to mathematical ability.

John Mather of the NASA Goddard Space Flight Center explains why and how the James Webb Space Telescope is being built.

Robyn Lee and Marcel Behr investigate the genomics of endemic tuberculosis in Northern Canada.

Karl Deisseroth explains a method to explore the wiring and structure of the brain.

Anthony James describes how gene drives can be used to spread malaria parasite resistance in mosquitoes.

Anthony Vecchiarelli explains a system of genetic cargo movement within cells that has roots in the work of Alan Turing.

Jintai Lin explains the impact of a global economy on air pollution in China and in the US.

Frank Bates describes how a project related to chewing gum led to materials science discoveries.

Abigail Marsh describes mechanisms of altruistic kidney donors' responsiveness to others' emotions.

Robert Epstein of the American Institute for Behavioral Research describes how search engine rankings can influence voter preferences.

Seth Burgess describes a timeline of events surrounding the end-Permian mass extinction.

Yaara Oren and Tal Pupko describe how bacteria can evolve via transfer of gene regulatory regions.

Noam Sobel explains how a human olfactory fingerprint helps uncover the uniqueness of individuals’ sense of smell.

Rino Rappuoli of GlaxoSmithKline discusses preclinical studies of a vaccine candidate against Staphylococcus aureus.

As AAAS president for 2015, Geraldine Richmond focuses on global scientific engagement.

Susan Fiske describes how intentional acts of harm motivate people to assign blame.

Jef Boeke explains how to safeguard against unauthorized growth of engineered microorganisms.

Lonnie Thompson discusses clues to Earth's ancient climate history that are stored in tropical glacial ice.