A matriarch feeds with her calf in Samburu National Reserve, Kenya. African elephants have experienced pressure from ivory harvest and habitat loss over the past several decades. A comprehensive ...

Quantitative studies of cultural evolution and gene-culture coevolution (henceforth “CE” and “GCC”) emerged in the 1970s, in the aftermath of the “race and intelligence quotient (IQ)” and “human ...

Culture is a powerful force that touches all aspects of human life, from health and reproduction to food and clothing technology, in every known human population around the world. Human cultural ...

Hu et al. (1) report the construction of a chimeric coronavirus (rOC43-CoV2-S) in which the spike (S) protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) replaces that of the ...

When Carl Linnaeus invented binomial nomenclature in the 18th century, it provided a universal language for scientists. Giving each species a unique name is essential for effective communication, ...

Cliffs of brown North Mountain Basalt atop latest Triassic-age white and red lacustrine strata of the Fundy Basin, outcropping along the north shore of the Bay of Fundy at Five Islands Provincial Park ...

Edited by Eva Andrei, Rutgers The State University of New Jersey, Piscataway, NJ; received March 14, 2024; accepted August 13, 2024 Part of the challenge in pinpointing the dominant origin of RTN is ...

Artist’s reconstruction: During the Early Cretaceous Period in northeastern China, a parent Psittacosaurus cares for nestlings in a burrow and senses the presence of a predatory mammal, Repenomamus.

Illustrated reconstruction of Dromaeosauriformipes rarus running along the muddy shore of an ancient lake. Image credit: PNAS/Alex Boersma (artist). Illustration of ciliates grazing on ...

Isoprene, an aerosol and ozone precursor, is mainly emitted by plants, particularly trees. Hui Wang et al. measured isoprene emissions from sedges, a class of herbaceous plants found in both natural ...

Edited by Éva Kondorosi, Hungarian Academy of Sciences, Biological Research Centre, Szeged, Hungary; received March 26, 2024; accepted October 7, 2024 ...

Contributed by Denis Duboule; received July 24, 2024; accepted October 12, 2024; reviewed by Terence D. Capellini and René Rezsohazy ...