As of 2026, the PM 2.5 CSN includes about 50 STN sites and about 90 State and Local Air Monitoring Stations (SLAMS) supplemental sites. All STN sites are required to use the national contract for ...

Matías Gómez-Corrales, a recent biological sciences Ph.D. graduate from the University of Rhode Island, and his advisor, Associate Professor Carlos Prada, have published a paper in Nature ...

Recent research shows that competition, not just climate, significantly influenced hominin evolution, with the Homo genus exhibiting unique speciation patterns that diverge markedly from other ...

Some basic aspects of human and animal biology and evolution involve the establishment of biological uniqueness of species and individuals within their huge variety. The discrimination among closely ...

To make the processes of adaptive radiation easier to understand, we look to phylogenetic trees. Phylogenetic systematics is the field of evolutionary biology that reconstructs the steps a species has ...

NATURAL SELECTION, as propounded in Charles Darwin’s master work, “On the Origin of Species”, explains how organisms evolve and adapt to their circumstances. Paradoxically, though, it is a bit hazy on ...

Female choice regarding their potential mate's genetic and culturally transmitted traits drives the appearance of new species in capuchino seedeater songbirds. According to a new study published in ...

Spatial isolation is known to promote speciation -- but researchers have now shown that, at least in yeast, the opposite is also true. New ecological variants can also evolve within thoroughly mixed ...

Viewing cities as natural laboratories has great potential to improve our understanding of evolutionary processes. In the past two decades many studies revealed that urban individuals look, sound and ...

IN 1981 PETER and Rosemary Grant, a husband-and-wife team of evolutionary biologists, spotted something odd on Daphne Major. Every year for the previous decade they had travelled from Princeton ...

In a debate at a major Texas university, the creationist was challenged with this claim: Hawaiian fruit flies that could once all interbreed had changed into numerous reproductively isolated species, ...

The picture shows the seven species of bryozoans that were used in the debunking. The white line is only 500 micrometers in length. Copyright: JoAnn Sanner, The ...