Other Sciences News

Middle Pleistocene Humans Possessed Sophisticated Woodworking Skills, Study Reveals

The 300,000-year-old double-pointed wooden stick at the site of Schöningen in Germany. Image credit: Peter Pfarr.
Jul 20, 2023 by News Staff

An analysis of a 300,000-year-old double-pointed wooden stick from the Middle Pleistocene site of Schöningen, Germany, shows it was scraped, seasoned and sanded before being used to kill animals. The 300,000-year-old double-pointed wooden stick at the site of Schöningen in Germany. Image credit: Peter Pfarr. The site of Schöningen in Germany, dated to approximately 300,000 years ago, yielded the earliest large-scale record of humanly-made wooden...

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Using NMR-based analysis, Tira et al. were able to identify the most abundant constituents of espresso coffee. Image credit: Sci.News.

Espresso Coffee Mitigates Aggregation and Condensation of Alzheimer’s Protein in Lab Experiments

Jul 19, 2023 by Natali Anderson

Espresso coffee is among the most consumed beverages in the world. Recent studies report a protective activity of the coffee beverage against neurodegenerative...

The structure of boron monoxide was a longstanding problem, dating back to 1940. Solving it required developing new NMR methods as well as applying x-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), x-ray photo electron spectroscopy (XPS), and transmission electron microscopy (TEM). Image credit: U.S. Department of Energy Ames National Laboratory.

Chemists Finally Determine Structure of Boron Monoxide

Jul 19, 2023 by News Staff

Boron monoxide, a binary compound of boron and oxygen, was first reported in the 1940s. However, scientists were unable to determine the structure of the...

WHO recommends that adults limit fat intake to 30% of their total energy intake, with no more than 10% of total energy coming from saturated fats, and less than 1% coming from trans fats. Image credit: Pexels.

WHO Releases New International Dietary Guidelines

Jul 18, 2023 by News Staff

Three new guidelines from the World Health Organization (WHO) — Saturated fatty acid and trans-fatty acid intake for adults and children, Total fat...

Wu et al. investigated the association of adult literacy activities (taking education classes, using a computer, and writing letters or journals) and active mental activities (playing games, cards, or chess and doing crosswords or puzzles) with dementia risk among older individuals. Image credit: Steve Buissinne.

Study: Engagement in Literacy and Active Mental Activities May Help Prevent Dementia in Older Age

Jul 17, 2023 by Natali Anderson

In a cohort study of over 10,000 older individuals in Australia, more frequent participation in adult literacy activities (taking education classes, using...

An artist’s impression of the early Earth. Image credit: NASA.

Earth’s Day was a Constant 19.5 Hours for Almost 1.5 Billion Years, Study Says

Jul 13, 2023 by News Staff

New research from the University of Toronto shows that from approximately 2 billion until 600 million years ago, an atmospheric tide driven by the Sun...

The 2,000-year-old fresco in Pompeii showing what may be an ancestor of modern pizza. Image credit: Pompeii archeological park.

Pompeii Fresco Depicts ‘Possible Ancestor’ of Italian Pizza

Jul 11, 2023 by Enrico de Lazaro

A 2,000-year-old still life fresco depicting a flat focaccia (Italian flatbread) has been found among the ruins of Pompeii, an ancient Roman city frozen...

Goh et al. show that silences can substitute for sounds in three prominent auditory illusions caused by event representation. Image credit: Finmiki.

Silence is Truly Heard, New Research Suggests

Jul 11, 2023 by News Staff

Do we only hear sounds? Or can we also hear silence? These questions are the subject of a centuries-old philosophical debate between two camps: the perceptual...

Boulila et al. highlight a common, correlatable 36-million-year cycle in the diversity of marine genera as well as in tectonic, sea-level, and macrostratigraphic data over the past 250 million years of Earth history. Image credit: James St. John / CC BY 2.0.

36-Million-Year Geological Cycle Drives Marine Biodiversity, Scientists Say

Jul 11, 2023 by News Staff

The evolution of life on Earth has changed dramatically at tens of million-year time scales. However, the causal mechanisms of these changes remain unclear....

Western honeybees (Apis mellifera). Image credit: PollyDot.

New Research Reveals How Honeybees Make Fast, Accurate Decisions

Jul 10, 2023 by News Staff

A new study published in the journal eLife elucidates the honeybee’s behavioral strategy to associate sensory cues with rewards of different values....

Xing et al. report printable metallic gels (pendular suspensions) consisting of an aqueous suspension of copper particles connected by bridges of liquid eutectic gallium indium alloy (EGaIn). Pendular suspensions rely on capillary forces to form networks between solid particles with a composition-dependent rheology, but prior studies have focused on insulating suspensions. Here, the rheology of a conductive solid-liquid-liquid suspension is tuned for 3D printing by varying the composition and the pH; the latter promotes metallic wetting. The dry printed parts have metallic electrical conductivity without requiring a sintering step. Drying at elevated temperatures can accelerate the removal of water while creating stress that drives shape change (i.e., 4D printing). As a demonstration, the authors print a conductive spider that lifts and assembles its own body from an initially flat shape. Such conductive inks are promising for printing metallic structures under ambient conditions. Image credit: Xing et al., doi: 10.1016/j.matt.2023.06.015.

Scientists Develop Metallic Gel for Conductive 3D and 4D Printing

Jul 6, 2023 by News Staff

Materials scientists at the North Carolina State University have connected copper particles with gallium indium alloy bridges to form a conductive printing...

Thompson et al. investigated whether supplementing older adults with monthly doses of vitamin D alters the incidence of major cardiovascular events.

Monthly Vitamin D May Prevent Heart Attacks in Older People, Study Shows

Jun 30, 2023 by News Staff

New research indicates that vitamin D supplementation might reduce the incidence of major cardiovascular events, particularly myocardial infarction and...

Habitual coffee consumers justify their life choices by arguing that they become more alert and increase motor and cognitive performance and efficiency; however, these subjective impressions still do not have a neurobiological correlation. Using functional connectivity approaches to study resting-state fMRI data in a group of habitual coffee drinkers, Picó-Pérez et al. show that coffee consumption decreased connectivity of the posterior default mode network (DMN) and between the somatosensory/motor networks and the prefrontal cortex, while the connectivity in nodes of the higher visual and the right executive control network (RECN) is increased after drinking coffee; the data also show that caffeine intake only replicated the impact of coffee on the posterior DMN, thus disentangling the neurochemical effects of caffeine from the experience of having a coffee. Image credit: Sci.News.

Study: Boost from Morning Coffee Can’t Be Replicated with Plain Caffeine

Jun 29, 2023 by News Staff

Plain caffeine only partially reproduces the effects of drinking a cup of coffee, activating areas of the brain that make you feel more alert but not the...

Ancient humans. Image credit: sjs.org / CC BY-SA 3.0.

New Research Shatters the Myth of Man the Hunter

Jun 29, 2023 by News Staff

The sexual division of labor among human foraging populations has typically been recognized as involving males as hunters and females as gatherers. Recent...

A group of Australopithecus afarensis. Image credit: Matheus Vieeira.

Hominins Butchered One Another 1.45 Million Years Ago: Study

Jun 27, 2023 by News Staff

Paleoanthropologists have found multiple cut marks on a 1.45-million-year-old (Early Pleistocene) hominin fossil found in the Koobi Fora Formation in the...

This image taken by Webb’s Near-Infrared Camera shows a part of the Orion Nebula known as the Orion Bar. It is a region where energetic ultraviolet light from the Trapezium Cluster -- located off the upper-left corner -- interacts with dense molecular clouds. The energy of the stellar radiation is slowly eroding the Orion Bar, and this has a profound effect on the molecules and chemistry in the protoplanetary disks that have formed around newborn stars here. Image credit: NASA / ESA / CSA / Webb / M. Zamani / PDRs4All ERS Team.

Webb Detects Crucial Carbon Molecule in Protoplanetary Disk

Jun 26, 2023 by News Staff

The vital role of a carbon molecule called methyl cation (CH3+) in interstellar carbon chemistry was predicted in the 1970s, but the unique capabilities...

The 57,000-year-old Neanderthal engravings discovered in La Roche-Cotard cave, France: the ‘circular panel’ (left) and the ‘wavy panel’ (right). Image credit: Jean-Claude Marquet / CC-BY 4.0.

57,000-Year-Old Neanderthal Engravings Discovered in France

Jun 21, 2023 by Enrico de Lazaro

Non-figurative markings on the walls of La Roche-Cotard cave in France are the oldest known engravings made by our sister species. The 57,000-year-old...

Hunga Tonga-Hunga Ha’apai volcanic eruption captured at December 30, 2021. Image credit: Tonga Geological Services.

Giant Eruption Plume from Tonga’s Volcano Produced Most Intense Lightning Rates Ever Detected

Jun 21, 2023 by Natali Anderson

On January 15, 2022, Hunga Volcano in Tonga produced the most violent eruption in the modern satellite era, sending a water-rich plume at least 58 km (36...

This image, taken with the Advanced Baseline Imager (ABI) instrument onboard NOAA’s GOES-18 weather satellite, shows the western hemisphere of Earth. Image credit: NOAA.

Drift of Earth’s Pole Confirms Groundwater Withdrawal as Contributor to Sea Level Rise

Jun 15, 2023 by News Staff

Earth’s rotational pole has drifted toward 64.16°E at a speed of 4.36 cm per year during 1993-2010 due to groundwater depletion and resulting sea level...

Polyacrylamide hydrogel disks. Image credit: Gustav Graeber / Carlos D. Díaz-Marín.

Salty Hygroscopic Hydrogel Could Absorb Water from Desert Air

Jun 15, 2023 by Enrico de Lazaro

Hygroscopic hydrogels are emerging as scalable and low-cost sorbents for atmospheric water harvesting, dehumidification, passive cooling, and thermal energy...

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