Other Sciences News

Planck’s law ignores but does not prohibit black-body radiation (BBR) from being circularly polarized. BBR from nanostructured filaments with twisted geometry from nanocarbon or metal has strong ellipticity from 500 to 3000 nanometers. The submicrometer-scale chirality of these filaments satisfies the dimensionality requirements imposed by fluctuation-dissipation theorem and requires symmetry breaking in absorptivity and emissivity according to Kirchhoff’s law. The resulting BBR shows emission anisotropy and brightness exceeding those of conventional chiral photon emitters by factors of 10 to 100. Image credit: Lu et al., doi: 10.1126/science.adq4068.

Nanostructured Filaments Produce Bright Light Waves that Twirl as They Travel

Dec 24, 2024 by News Staff

Bright, twisted light can be produced thanks to nanostructured filaments with twisted geometry, according to scientists at the University of Michigan. Planck’s...

Aerial view of Site 201 north of the center of Timna Valley on the western outskirts of the Wadi Arabah, Israel. Image credit: Yagel et al., doi: 10.1038/s41598-024-80939-5.

Study: Pre-Roman Copper Industry in Timna Valley Had No Polluting Impact on Environment

Dec 23, 2024 by News Staff

Scientists from Tel Aviv University have conducted geochemical surveys at two smelting camps — dating back to the 10th century BCE, the era of the...

Coffee consumption in patients with atrial fibrillation may be associated with improved cognitive performance and reduced inflammatory markers. Image credit: Sci.News.

Coffee Consumption May Help Improve Cognitive Performance in Patients with Atrial Fibrillation

Dec 23, 2024 by Enrico de Lazaro

Atrial fibrillation is an independent risk factor for the development of cognitive impairments. Regular coffee consumption has shown cognitive benefits...

Dayan et al. found that although large language models show remarkable proficiency in several cognitive domains, they show notable deficits in visuospatial and executive functions, akin to mild cognitive impairment in humans.

Almost All Leading Large Language Models Show Signs of Mild Cognitive Impairment: Study

Dec 20, 2024 by News Staff

With the exception of ChatGPT 4o, almost all publicly available large language models subjected to a test called the Montreal Cognitive Assessment (MoCA)...

Anauralia is the phenomenon of an absence of auditory sensory imagery -- not hearing anything in one’s inner ear. Image credit: Vat Loai.

Some People Can’t Imagine Sounds: Anauralia

Dec 19, 2024 by News Staff

Some people can’t imagine a dog barking or a police siren; songs can’t get stuck in their heads; they have no inner voices. Anauralia was proposed...

El Sidron Neanderthals taste wild mushrooms, pine nuts and forest moss. Image credit: Abel Grau, CSIC Communication.

Scientists Identify Genetic Variants that Determine Tooth Shape

Dec 17, 2024 by News Staff

One of these genetic variants was inherited from Neanderthals, according to a study led by University College London researchers. El Sidron Neanderthals...

Denisovans were probably dark-skinned, unlike the pale Neandertals. The picture shows a Neanderthal man. Image credit: Mauro Cutrona.

Study: Neanderthal Gene Flow into Modern Humans Occurred between 50,500 and 43,500 Years Ago

Dec 13, 2024 by News Staff

In a genomic study encompassing more than 300 genomes, researchers determined the time period during which Neanderthals interbred with modern humans, starting...

Illustration of the Zlatý kůň/Ranis group. Image credit: Tom Björklund / Max Planck Institute for Evolutionary Anthropology.

Earliest Modern Human Genomes Decoded

Dec 12, 2024 by News Staff

Scientists have sequenced and analyzed the genomes of seven individuals who lived between 42,000 and 49,000 years ago in Ranis, Germany and Zlatý kůň,...

Mapping of the altermagnetic order vector in MnTe. Image credit: Amin et al., doi: 10.1038/s41586-024-08234-x.

New Class of Magnetism Imaged for First Time: Altermagnetism

Dec 12, 2024 by News Staff

Altermagnetism is a distinct form of magnetic order where the tiny constituent magnetic building blocks align antiparallel to their neighbors, but the...

Added sugar intake was positively associated with ischemic stroke and abdominal aortic aneurysm, although the highest risks of most outcomes were found in the lowest intake category; positive linear associations were found between toppings intake and abdominal aortic aneurysm, and between sweetened beverage intake and ischemic stroke, heart failure, atrial fibrillation, and abdominal aortic aneurysm; negative linear associations were found between treats intake (pastries, ice cream, chocolate, and sweets) and all outcomes, and between toppings intake (table sugar, honey, jams, and marmalades) and heart failure and aortic stenosis. Image credit: Ernesto Rodriguez.

Drinking Sweetened Beverages Significantly Increases Cardiovascular Disease Risk, Study Suggests

Dec 10, 2024 by News Staff

In a new study published in the journal Frontiers in Public Health, scientists investigated the associations between intake of added sugar and various...

Intake of dark chocolate instead of milk chocolate may be associated with a lower risk of type 2 diabetes. Image credit: Sci.News.

Increased Consumption of Dark, But Not Milk, Chocolate Reduces Type 2 Diabetes Risk: Study

Dec 6, 2024 by News Staff

Consumption of at least five servings of dark chocolate a week (one serving is equal to a standard chocolate bar/pack or 1 oz) compared with rare consumption...

New Species of Archaic Human Proposed: Homo juluensis

Dec 6, 2024 by Enrico de Lazaro

Homo juluensis — a newly-erected human species that includes enigmatic Denisovans and several hominin fossils from Tibet, Taiwan and Laos —...

The frequency of emoji use varies across genders and relationship types. Image credit: Pete Linforth.

Study: People with Higher Emotional Intelligence Use Emojis More Frequently

Dec 5, 2024 by News Staff

Higher emotional intelligence is linked to more emoji use with friends, while avoidant attachment is associated with less emoji use with friends and dating...

Bottom-up nano- to micro-fabrication is crucial in modern electronics and optics. Conventional multi-scale array fabrication techniques, however, are facing challenges in reconciling the contradiction between the pursuit of better device performance and lowering the fabrication cost and/or energy consumption. Chang et al. introduce a facile mixed-metal array fabrication method based on guided self-assembly of polymerizing organometallic adducts derived from the passivating oxides of a ternary liquid metal to create mixed metal wires. Image credit: Julia Chang.

Researchers Demonstrate New Technique for Self-Assembling Electronics

Dec 5, 2024 by News Staff

The new proof-of-concept work, published in the journal Materials Horizons, paves the way for self-assembling more complex electronic devices without relying...

An artist’s reconstruction of Clovis life 13,000 years ago shows the Anzick-1 infant with his mother consuming mammoth meat near a hearth. Another individual crafts tools, including dart projectile points and atlatls. A mammoth butchery area is visible nearby. Image credit: Eric Carlson / Ben Potter / Jim Chatters.

Clovis People’s Diet Mainly Included Mammoths and Other Large Mammals, New Study Says

Dec 4, 2024 by News Staff

Paleoanthropologists have found that the Columbian mammoth (Mammuthus columbi) was the largest contributor to the diet of the Clovis people — the...

$A diffractive robot. Image credit: Smart et al., doi: 10.1126/science.adr2177.$