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Half-ton early bovines roamed 4-million-year-old grasslands in Europe
Half-ton early bovines roamed 4-million-year-old grasslands in Europe Robert Egan Associate Editor The first large-sized bovines grew to up to half a ton 4 million years ago in the European Early Pliocene, an early step toward our modern diversity of large-bodied buffalo and cattle, according to a study published June 3, 2026, in the open access journal PLOS One by Leonardo Sorbelli of the Leibniz Institute for Evolution and Biodiversity Science, Germany, and colleagues. Bovines are major...
Abortion restrictions associated with lower female medical school applicant numbers
Abortion restrictions associated with lower female medical school applicant numbers Sadie Harley Scientific Editor Robert Egan Associate Editor States with restrictive abortion policies saw slower growth in the proportion of female medical school applicants following the 2022 reversal of Roe v. Wade, according to a new study published in the open-access journal PLOS Global Public Health by Amrit Kirpalani of Western University, Canada, and colleagues. Following the Supreme Court's 2022...
Q&A: Ancient bird species found in China's Liaoning had extra-long tail feathers for elaborate courtship
Ancient bird species found in China's Liaoning had extra-long tail feathers for elaborate courtship Sadie Harley Scientific Editor Robert Egan Associate Editor A recently discovered extinct bird from the early Cretaceous Period (approximately 121 million years ago) may have waggled its long tail feathers to attract mates, according to a study published May 27, 2026 in the open-access journal PLOS One by Alexander Clark of the University of Chicago and colleagues. Clark shares more details...
Faster lower-cost PFAS testing could reshape how US drinking water is monitored
Faster lower-cost PFAS testing could reshape how US drinking water is monitored Gaby Clark Scientific Editor Robert Egan Associate Editor A new investigation from the University of Kansas improves detection of PFAS, a family of so-called "forever chemicals" in drinking water supplies. The method, which can measure trace pollution levels of PFAS in water more quickly and inexpensively than current techniques, was recently detailed in the journal PLOS Water. PFAS chemicals, marketed for...
Fish-microbe partnership may influence ocean health by making carbon-trapping minerals
The article discusses a study that explores the relationship between the gut microbes of a fish and global ocean processes. The research suggests that symbiotic bacteria may support calcium carbonate precipitation in the Gulf toadfish, which could have implications for ocean chemistry and the marine carbon cycle. The study, published in PLOS Biology, provides new insight into how marine ecosystems help regulate ocean chemistry and the marine carbon cycle.
Whatever the mirror test tells us, beluga whales pass it
In hours of underwater video footage from a New York aquarium, a beluga whale named Natasha stretches her neck, pirouettes, nods, and shakes her head in front of a two-way mirror. Her daughter Maris does much the same. According to a new study published in PLOS One, both animals show the behavioral hallmarks of mirror self-recognition—a cognitive ability long considered a marker of self-awareness, and one that had never before been documented in beluga whales.
Gene ancestries reveal diverse microbial associations during eukaryogenesis
Abstract The origin of eukaryotes remains a central enigma in biology1. Continuing debates agree on the pivotal role of a symbiosis between an alphaproteobacterium and an Asgard archaeon2,3. However, the nature, timing and contributions of other potential bacterial partners4,5,6 and the role of interactions with viruses7,8,9 remain contentious.
SIRT7 regulates dosage compensation and safeguards the female X chromosome
Abstract Sirtuins are deacetylases implicated in stress responses and longevity in mammals1,2. Although their differential impact on disease for the two sexes has been noted3,4,5,6,7, the underlying reasons are unclear. Here, using Sirt7 as a model in mice, we examine the mechanisms leading to sex differences and find that Sirt7−/− female mice have decreased fitness throughout their lifespan.
A 5.3-million-year-old deep-sea whale necropolis in the Diamantina Zone
Abstract Whale falls are biodiversity oases at seabeds1,2,3,4,5,6, yet their record from the oceans has remained sparse and fragmentary6,7. Here we report the discovery of a vast whale necropolis in the Diamantina Zone (4,616- to 7,001-m depth), extending about 1,200 km along the sea floor of the southeastern Indian Ocean. This area has a deep and extensive accumulation comprising five modern natural whale-fall communities and 476 fossil cetaceans recorded.
Billions are going into fish passage projects, but planning methods can undercut results
Billions are going into fish passage projects, but planning methods can undercut results Sadie Harley Scientific Editor Robert Egan Associate Editor Fish that split their lives between fresh and salt water often face obstacles getting back and forth. Dams and roads fracture river networks and interfere with traditional migratory routes, sparking concerns about fish health and abundance, as well as biodiversity on a broader scale. Efforts to restore fish passage are cropping up across the...