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 ...

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 ...

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 ...

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 ...

Edited by Lily Jan, Howard Hughes Medical Institute–University of California San Francisco, San Francisco, CA; received August 17, 2024; accepted March 3, 2025 ...

Trackways 2 and 1 in the rescued slabs are in close proximity to one another (~30 cm apart) and are preserved in a very thin (~0.05 cm) and relatively smooth and flat mud drape. Falkingham & ...

Myosins are ubiquitous eukaryotic molecular motors responsible for providing tensile forces in cells and motile power at the nanoscale. This allosteric mechanoenzyme undergoes a series of ...

Human diseases frequently arise from defects in the mechanisms by which external cues are sensed and relayed to the interior of the cell. The proteins most widely targeted by existing therapeutic ...