The sustainable aviation challenge is attracting plenty of investment and brainpower—as well as government policies aiming to incentivize development. But the innovations coming out of these efforts ...

Edited by Joseph Kieber, The University of North Carolina at Chapel Hill, Chapel Hill, NC; received November 27, 2024; accepted January 7, 2025 ...

A yellow-breasted capuchin nut-cracking site, with the remains of the used hammerstone and resulting sharp-edged flakes and fragments atop a large stone anvil. The development of stone tools, ...

Founded in 1914, PNAS publishes some of the world’s highest-quality and most significant research. Every paper at PNAS is handled by a member of the National Academy of Sciences, a nonprofit ...

Coronal brain slice showing projections from different visual areas in the cerebral cortex to the ventrolateral geniculate nucleus (vLGN). These pathways are part of the circuit thought to mediate the ...

Edited by Anne C. Hart, Brown University, Providence, RI; received August 29, 2024; accepted December 19, 2024 by Editorial Board Member Yishi Jin Taken together, these results identify VHL-1 as a ...

Maria Iandolo New, who passed away on July 26, 2024, at the age of 95, was the child of Italian immigrants who came to America as professional musicians. She grew up in the Little Italy section of ...

Some historically persecuted large carnivore species in Europe and North America are now recovering and expanding into formerly occupied ranges. The spatial and temporal dynamics of wildlife ...

Since the turn of the 21st century, rapid advancements in phylogenomics have significantly deepened our understanding of the tree of life, particularly for ancient divergence. A recent letter to the ...

Cable bacteria (Desulfaobulbaceae) are known for their ability to conduct electricity in the form of negatively charged electrons over many millimeters. To determine whether cable bacteria can also ...

A kidney cancer cell nucleus is studded with aberrant nuclear speckles (orange). Normal healthy cells tend to have the speckles clustered toward the middle. Image credit: Kate Alexander (Cold Spring ...

Since 2002, PNAS has offered free and immediate access to journal content for researchers in an initial group of 81 countries, a number that has grown to over 120 lower-income countries. This access ...