feed info

81 articles from ScienceDaily

Quirky response to magnetism presents quantum physics mystery

Scientists describe the quirky behavior of one such magnetic topological insulator. The new article includes experimental evidence that intrinsic magnetism in the bulk of manganese bismuth telluride (MnBi2Te4) also extends to the electrons on its electrically conductive surface. Such materials could be just right for making qubits, but this one doesn't obey the rules.

Ingredient missing from current dark matter theories

Recent observations have found that something may be missing from the theories of how dark matter behaves. This missing ingredient may explain why researchers have uncovered an unexpected discrepancy between observations of the dark matter concentrations in a sample of massive galaxy clusters and theoretical computer simulations of how dark matter should be distributed in clusters.

Fatter legs linked to reduced risk of high blood pressure

Adults with a higher percentage of fat tissue in their legs were less likely than those with a lower percentage to have high blood pressure. Research findings held true even after adjusting for age, sex, race and ethnicity, education, smoking, alcohol use, cholesterol levels and waist fat, although to a lesser degree.

Research on the impact of ACE-i and ARBs for patients with COVID-19 continues to evolve

Low blood pressure, or hypotension, in COVID-19 patients with a history of hypertension appears to be a risk factor for kidney damage and death. Reducing hypertension medications if and when COVID-19 patients become hypotensive could prevent acute kidney injury and death, according to a new study. A different study confirmed hypertension is the most common co-existing disease in hospitalized...

Telomere length varies across human tissue types

A new study answers the question of whether or not blood cell telomere length is a suitable proxy for telomere length in other tissues by examining over 20 human tissue types, finding variations and correlations between different tissue types.

High-fidelity record of Earth's climate history puts current changes in context

Scientists have compiled a continuous, high-fidelity record of variations in Earth's climate extending 66 million years into the past. The record reveals four distinctive climate states, which the researchers dubbed Hothouse, Warmhouse, Coolhouse, and Icehouse. These major climate states persisted for millions and sometimes tens of millions of years, and within each one the climate shows rhythmic...

Biological sex affects genes for body fat, cancer, birth weight

Biological sex has a small but ubiquitous influence on gene expression in almost every type of human tissue, reports a new study. These sex differences are observed for genes involved in many functions, including how people respond to medication, how women control blood sugar levels in pregnancy, how the immune system functions, how cancer develops and male pattern baldness. The information could...

FABP4: Preschool-aged biomarker discovered for autism spectrum disorder

Researchers have discovered a biomarker that can detect autism spectrum disorder (ASD) in preschool-aged children. The new study found that levels of the protein FABP4 were much lower in four- to six-year-old children with ASD than they were in other typically developing children. Experiments in mice that lacked FABP4 revealed changes in neurons that resemble those found in the postmortem brains...