
PNAS Science Sessions
Welcome to Science Sessions, the PNAS podcast program. Listen to brief conversations with cutting-edge researchers, Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in PNAS, plus a broad range of scientific news about discoveries that affect the world around us.
Latest episodes

Jun 6, 2019 • 5min
Interview with C. Owen Lovejoy
C. Owen Lovejoy was elected to the National Academy of Sciences in 2007 for his work in the field of anthropology. Lovejoy overturned traditional models of human origins by integrating biomechanics into biological anthropology, demonstrating that the earliest hominids walked on two legs. He developed novel methods for quantifying sexual dimorphism and revealing the demographics of prehistoric humans.

Jun 6, 2019 • 5min
Interview with Albert Libchaber
Albert Libchaber was elected to the National Academy of Sciences in 2007 for his work in physics. Libchaber has made lasting and fundamental contributions to experimental chaos dynamics and its application to biological physics, from elucidating the forces at work when a fish swims through water to defining the minimal conditions necessary for artificial life.

Jun 6, 2019 • 5min
Interview with John G. Hildebrand
John G. Hildebrand was elected to the National Academy of Sciences in 2007. His work on the functional organization, physiology, and development of the central olfactory system of insects has made him a pioneer in analyzing neural mechanisms underlying chemosensory control of mating behavior and insect--plant interactions. This work has application in disruption of insect mating behavior and herbivory, with practical benefit to human health and welfare.

Jun 6, 2019 • 5min
Interview with Cozzarelli Prize Winner Kenneth A. Dawson
Understanding the nanoparticle-protein corona using methods to quantify exchange rates and affinities of proteins for nanoparticles.

Jun 6, 2019 • 5min
Interview with Cozzarelli Prize Winner Brian Spencer
Targeted delivery of proteins across the blood--brain barrier.

Jun 6, 2019 • 5min
Interview with Cozzarelli Prize Winner Andreas Reichenbach
Müller cells are living optical fibers in the vertebrate retina.

Jun 6, 2019 • 5min
Interview with Cozzarelli Prize Winner R. Adriana Hernandez-Aguilar
Savanna chimpanzees use tools to harvest the underground storage organs of plants.

Jun 6, 2019 • 5min
Interview with Cozzarelli Prize Winner Monica Olvera de la Cruz
Faceting ionic shells into icosahedra via electrostatics.

Jun 6, 2019 • 5min
Interview with Cozzarelli Prize Winner Sandra Díaz
Incorporating plant functional diversity effects in ecosystem service assessments