Anthropologist finds South American cultures quickly adopted horses

Anthropologist finds South American cultures quickly adopted horses

Artifacts found at the Chorrillo Grande 1 site include Venetian glass beads (top), horse bones and teeth (middle) and metal artifacts including nails and ornaments (bottom). Credit: Juan Bautista Belardi A new study from a University of Colorado Boulder researcher, conducted with colleagues in Argentina, sheds new light on how the introduction of horses in South … Read more

Can seabirds hear their way across the ocean? Our research suggests so

Can seabirds hear their way across the ocean? Our research suggests so

Credit: CC0 Public Domain Animals cover astonishing distances when they are looking for food. While caribou, reindeer and wolves clock up impressive mileage on land, seabirds are unrivaled in their traveling distances. Arctic terns travel from the Arctic to Antarctica and back as part of their annual migration. Wandering albatrosses (Diomedea exulans) fly the equivalent … Read more

New research rewrites our understanding of whale evolution

New research rewrites our understanding of whale evolution

Dr James Rule (L) and Dr Erich Fitzgerald (R) with the Murray River whale fossil at Melbourne Museum. Credit: Eugene Hyland. Source: Museums Victoria New research from the Museums Victoria Research Institute has turned upside down our previous understanding of the evolution of the largest animals ever––baleen whales. Paleontologists Dr. James Rule (Monash University and … Read more

What octopus DNA tells us about Antarctic ice sheet collapse

What octopus DNA tells us about Antarctic ice sheet collapse

Turquet’s octopus (Pareledone turqueti) lives on the seafloor around Antarctica. Credit: Dave Barnes/British Antarctic Survey If we want to understand the future, it’s often useful to look at the past. And even more useful if you use octopus DNA to peer into worlds long gone. About 125,000 years ago, the Earth was in its last … Read more

Why the universe might be a hologram

Why the universe might be a hologram

The colored circle represents the hologram, out of which the knotted optical vortex emerges. Credit: University of Bristol A quarter century ago, physicist Juan Maldacena proposed the AdS/CFT correspondence, an intriguing holographic connection between gravity in a three-dimensional universe and quantum physics on the universe’s two-dimensional boundary. This correspondence is at this stage, even a … Read more

3D preservation of trilobite soft tissues sheds light on convergent evolution of defensive enrollment

3D preservation of trilobite soft tissues sheds light on convergent evolution of defensive enrollment

Enrollment in arthropods is an important defensive strategy that provides protection against predation. A—C, Enrolled Ceraurus from the Walcott-Rust Quarry. D—F, Enrolled Flexicalymene from the Walcott-Rust Quarry. G—I, Enrolled isopod. J—L, Enrolled glomerid millipede. Credit: Sarah R. Losso They’d been in the collections of the Harvard Museum of Comparative Zoology (MCZ) since the 1870s when … Read more

Many models are better than one for COVID-19 scenario projections, study finds

Many models are better than one for COVID-19 scenario projections, study finds

This images shows two years of ensemble projections (rainbow lines) generated by the COVID-19 Scenario Modeling Hub and real-world COVID-19 data (black lines). Different rounds of projections—the hub produced 16 rounds of projections, each of which predicted anywhere from three months to a year of pandemic outcomes—are represented by different colors. For each round, four … Read more

Agronomists map evolution and genetic diversity of millet to increase yield

Agronomists map evolution and genetic diversity of millet to increase yield

Population structure analysis results of 100 proso millet accessions: clustering diagram at K = 2, at K = 3 and at K = 5. Credit: Agronomy (2023). DOI: 10.3390/agronomy13102514 Compared to other cereals, millet (Panicum miliaceum L) has an important advantage—resistance to a more arid climate. Millet contains all the essential amino acids, 10%–15% of … Read more

Study finds that ecological evidence used by government policy-makers is unstable over time

Study finds that ecological evidence used by government policy-makers is unstable over time

Frequencies of different magnitude and significance trends. Credit: Research Synthesis Methods (2023). DOI: 10.1002/jrsm.1691 A large study, led by academics from Royal Holloway, University of London, found research used by policy-makers regarding conservation and environmental management is unstable over time and can quickly become out of date: presenting a serious potential threat to evidence-based decision-making. … Read more

A novel insect repellent attacks multiple sensory pathways

A novel insect repellent attacks multiple sensory pathways

Sensory pathways in Drosophila to detect and avoid 2MT are shown. Flies escape from 2MT through olfactory, taste, and nociceptive sensory pathways. This study identified that TRPA1 expressed in taste and nociceptive sensory neurons play a major role in 2MT-induced aversive behaviors. Evaporated 2MT is also detected by ORs in olfactory pathway. Credit: Shoma Sato … Read more