Paleontology

Early Predatory Dinosaurs Survived Shift in Their Ecosystem, Fossil Fragment Suggests

An artistic representation of the CAPPA/UFSM 0539 herrerasaurid dinosaur in life. Image credit: Johnny Pauly V. Mingau.

A single bone from southern Brazil indicates that herrerasaurids, among the first large meat-eating dinosaurs, persisted after the fauna around them changed. An artistic representation of the CAPPA/UFSM 0539 herrerasaurid dinosaur in life. Image credit: Johnny Pauly V. Mingau. Herrerasaurid dinosaurs lived during the Carnian age of the Late Triassic epoch, roughly 230 million years ago. They were...

Biology

Honeybee Hives are Living Immune Systems, Scientists Say

Bees can solve seemingly clever counting tasks with very small numbers of neurons in their brains. Image credit: PollyDot.

Honeybees pack tens of thousands of nestmates into a small space, a setup that should invite disease. New research led by the University of Sydney suggests part of their protection is a map of antimicrobial chemistry laid out across the hive. Fernandes et al. investigated how chemical defenses contribute to colony-level immunity using the European honeybee (Apis mellifera) as a model system. Image...

Genetics

Average Human Genome Carries Millions of Variants, New Research Shows

The average human genome contains 4.3-5.3 million variants, of which 1.5% are rare. Image credit: Wright et al., doi: 10.1186/s13073-026-01792-x.

Researchers at the University of Exeter Medical School have produced the most comprehensive portrait to date of the ‘average’ human genome, drawn from the whole-genome sequences of nearly 900,000 adults in two large research biobanks: UK Biobank and the US-based All of Us program. The average human genome contains 4.3-5.3 million variants, of which 1.5% are rare. Image credit: Wright et al.,...

Geology

Australia’s North Pole Dome Crater is Earth’s Oldest and Only Known Archean Impact Structure

The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center; (B) geological map of the NPD and the shatter-cone field (yellow star); (C) A quartz (Qtz)-carbonate vein cutting shatter-cone lineation. Image credit: Kirkland et al., doi: 10.1130/G54866.1.

Zircon crystals and impact-altered minerals show that a massive asteroid slammed into what is now the Pilbara region of Western Australia about 3 billion years ago. The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center;...