Wildlife biologist David Wiens was extremely nervous the first time he shot an owl. He steadied himself in the evening darkness of an Oregon fire road, pointed his shotgun at a big barred owl perched ...

E.F.’s research is supported by the project INIC-UV UVA22991; as well as the Fondecyt Project Number 1211323. N. V. Grishin, Y. I. Wolf, E. V. Koonin, From complete genomes to measures of substitution ...

Designing and constructing mechanical systems to operate at a microscale are challenging tasks. Yet, organisms such as fruit flies perform many of the desired movements and functions of a microscale ...

Note: The article usage is presented with a three- to four-day delay and will update daily once available. Due to ths delay, usage data will not appear immediately following publication. Citation ...

Edited by Donald Ort, University of Illinois at Urbana Champaign, Urbana, IL; received December 10, 2024; accepted January 28, 2025 ...

Contributed by J. C. Séamus Davis; received November 1, 2024; accepted February 10, 2025; reviewed by Yasutomo J. Uemura and Han Yan ...

The COVID-19 pandemic highlighted the importance of gathering information on pathogen characteristics as early as possible when an outbreak strikes. But it also underscored how quickly much of that ...

Y.D. and M.B.M. were supported by the National Nuclear Security Administration under the Stewardship Science Academic Alliance Program through the US Department of Energy (DOE) under Grant ...

Despite decades of research, psychiatrists still don’t have reliable biomarkers to trace the path of human misery. The complexity and heterogeneity of psychiatric conditions means that there are no ...

Contributed by M. Brian Maple; received October 1, 2024; accepted February 13, 2025; reviewed by Satoshi Fujimoto and Xiaolong Liu ...

Illustration of the reorganization of jaw muscles and the skull following an increase in brain size during bird evolution. The avian skull underwent significant modifications during the evolution of ...

P. I. Fields, R. V. Swanson, C. G. Haidaris, F. Heffron, Mutants of Salmonella typhimurium that cannot survive within the macrophage are avirulent. Proc. Natl. Acad ...