PNAS Science Sessions

PNAS
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Nov 15, 2021 • 17min

CRISPR use in agriculture: Part 1

A special episode explores the state of CRISPR use in agriculture. Image credit: Can Stock Photo/molekuul.
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Nov 2, 2021 • 17min

Language loss and medicinal plant knowledge

Rodrigo Cámara-Leret explains the impact of indigenous language extinction on medicinal plant knowledge. Image credit: Pixabay/DEZALB.
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Oct 18, 2021 • 11min

How Zen stones form

Nicolas Taberlet and Nicolas Plihon explore the physical explanation for a fascinating natural phenomenon: the formation of Zen stones on frozen lakes. Image credit: N. Taberlet, N. Plihon. Lab Physique ENS de Lyon and CNRS.
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Oct 4, 2021 • 11min

Greenhouse gas emissions tied to concrete

Hessam Azarijafari, Randy Kirchain, and Jeremy Gregory explore how innovations in the concrete industry can reduce greenhouse gas emissions. Image credit: Pexels/Life Of Pix.
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Sep 20, 2021 • 13min

Racial and ethnic disparities in pollutant exposure

Sarah Chambliss discusses racial and ethnic disparities in exposure to air pollutants. Image credit: Pixabay/sueegeneris.
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Sep 7, 2021 • 11min

Soil microbes and hybrid vigor

Maggie Wagner and Manuel Kleiner report that the interaction between maize and soil microbes influences hybrid vigor. Image credit: Kayla M. Clouse.
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Aug 23, 2021 • 11min

Racial disparities in air pollution

Gaige Kerr discusses racial disparities in atmospheric levels of nitrogen dioxide in the United States.
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Aug 9, 2021 • 10min

Genome sequencing of extinct giant lemur

Stephanie Marciniak, Logan Kistler, and Ed Louis describe an extinct giant lemur.
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Jul 26, 2021 • 11min

Upslope advance of forest fires

Mohammad Reza Alizadeh, John T. Abatzoglou, and Mojtaba Sadegh report that forest fires have been advancing upslope across the western United States in recent decades.
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Jul 12, 2021 • 17min

How bats know the speed of sound

Eran Amichai investigates how bats know the speed of sound.

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