Other Sciences News

Metal-Free Organic Molecules Show Highly Efficient Room-Temperature Phosphorescence

An artist’s impression of fast phosphorescence: the blue light rays come into the molecule to generate bold yellow pillars, representing the acceleration of phosphorescence through the mixing of singlet states. Image credit: YAP Co Ltd.
Jul 4, 2024 by News Staff

Metal-free organic 3-bromo-2-thienyl diketones exhibit fast and highly efficient room-temperature phosphorescence with high color purity under various conditions, according to new research led by Osaka University chemists. An artist’s impression of fast phosphorescence: the blue light rays come into the molecule to generate bold yellow pillars, representing the acceleration of phosphorescence through the mixing of singlet states. Image credit: YAP...

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A portrait of a juvenile female Denisovan based on a skeletal profile reconstructed from ancient DNA methylation maps. Image credit: Maayan Harel.

Denisovans Survived on Tibetan Plateau until 48,000-32,000 Years Ago

Jul 4, 2024 by News Staff

Archaeologists have found a new hominin rib specimen in Baishiya Karst Cave, one of the only two places where Denisovans are known to have lived. Dated...

Eyed needles are among the most iconic of Paleolithic artifacts, traditionally seen as rare indicators of prehistoric clothing, particularly tailoring. Image credit: Mariana Ariza.

Eyed Needles Were Invented around 40,000 Years Ago in Eastern Eurasia, Archaeologists Say

Jun 28, 2024 by News Staff

Eyed needles were a new technological innovation used to adorn clothing for social and cultural purposes, marking the major shift from clothes as protection...

Coffee drinking is a heritable habit, and one that carries a certain amount of genetic baggage. Image credit: Sci.News.

New Study Sheds More Light on Genetics of Coffee Consumption

Jun 19, 2024 by News Staff

Coffee is one of the most widely consumed beverages. In new research, scientists from the University of California, San Diego and elsewhere performed a...

Shroff et al. revealed excellent antiviral activity manifesting already within 10 to 15 min in Scots pine and Norway spruce, particularly against enveloped viruses; in contrast, other hardwoods displayed varied efficacy, with oak showing effectiveness against the enterovirus. Image credit: Shroff et al., doi: 10.1021/acsami.4c02156.

Solid Wood Surfaces Have Natural Antiviral Properties, Study Shows

Jun 19, 2024 by News Staff

In a new study, scientists from the University of Jyväskylä and the University of Eastern Finland evaluated the antiviral efficacy of various wood types,...

Wang et al. demonstrate that the inner core of Earth gradually super-rotated from 2003 to 2008, and then from 2008 to 2023 sub-rotated two to three times more slowly back through the same path. Image credit: USC Graphic / Edward Sotelo.

Inner Core of Earth Began to Decrease Its Speed around 2010, Study Suggests

Jun 14, 2024 by News Staff

Movement of the inner core of our planet has been debated by the scientific community for two decades, with some research indicating that the inner core...

To track the spatial tuning of neurons dynamically during offline states, Maboudi et al. used a new Bayesian learning approach based on the spike-triggered average decoded position in ensemble recordings from freely moving rats.

Some Dreams May, in Fact, Predict Future, Neuroscientists Say

Jun 12, 2024 by News Staff

University of Michigan anesthesiologist Kamran Diba and colleagues have found that during sleep, some neurons not only replay the recent past but also...

Life may have begun shortly after Earth formed 4.54 billion years ago. Image credit: Hadeano.

Great Oxidation Event Lasted At Least 200 Million Years, New Study Reveals

Jun 12, 2024 by News Staff

About 2.5 billion years ago, free oxygen first started to accumulate to meaningful levels in Earth’s atmosphere, setting the stage for the rise of complex...

Higher intakes of fruit are associated with a reduced risk of incident depression.

Higher Fruit Consumption Reduces Risk of Depression, Study Suggests

Jun 5, 2024 by News Staff

New research led by University of New South Wales scientists supports a role for fruit — but not vegetable — intake in protecting against depression. Higher...

An artistic conception of the early Earth. Image credit: Simone Marchi / NASA.

Freshwater Appeared on Earth About 4 Billion Years Ago, Study Suggests

Jun 4, 2024 by Natali Anderson

Analyzing 4-billion-year-old zircon crystals from the Jack Hills in Western Australia’s Mid West region, geoscientists have pushed back the timeline...

Lee et al. compared the inhibitory effects of orange peel polar fraction (OPP) and orange peel nonpolar fraction (OPNP) on trimethylamine (TMA) and trimethylamine N-oxide (TMAO) production in response to l-carnitine treatment in vivo and in vitro.

Orange Peels May Hold Key to Better Cardiovascular Health, Scientists Say

May 29, 2024 by News Staff

The orange peel polar fraction extract containing a compound called feruloylputrescine has the potential to alleviate cardiovascular disease, according...

Neanderthal family. Image credit: Field Museum.

New Research Sheds Light on Childhood Stress in Neanderthals and Paleolithic Humans

May 29, 2024 by News Staff

Neanderthals’ lives were historically portrayed as highly stressful, shaped by constant pressures to survive in harsh ecological conditions, thus potentially...

Chronic caffeine intake prompts compensatory and cumulative dopamine transporter downregulation, consistent with caffeine’s reported risk reduction in Parkinson’s disease. Image credit: Clinical Neurosciences, University of Turku.

Regular Caffeine Consumption Affects Brain Dopamine Function in Parkinson’s Patients, Study Says

May 28, 2024 by News Staff

In a new cross-sectional and longitudinal study, researchers from the University of Turku and Turku University Hospital investigated the effects of dietary...

Senavirathna et al. are investigating the effects ellagic acid -- an antioxidant found in some pomegranates, raspberries, strawberries, and grapes, and nuts -- could have on halting and potentially reversing the damage caused by fatty liver disease. Image credit: Engin Akyurt.

Ellagic Acid May Represent Potential Food Intervention for Non-Alcoholic Fatty Liver Disease: Study

May 27, 2024 by News Staff

Ellagic acid is a polyphenolic, non-flavonoid compound naturally found in a variety of fruits, such as pomegranates, raspberries, strawberries, and grapes,...

Conceptual art shows the rare earth element promethium in a vial surrounded by an organic ligand. Image credit: Jacqueline DeMink / Thomas Dyke / ORNL.

Scientists Determine Properties of Extremely Rare Element: Promethium

May 22, 2024 by News Staff

Promethium is extremely rare, with only about 0.5 kg naturally occurring in Earth’s crust at any given time. Conceptual art shows the rare earth element...

The water course of the ancient Ahramat Branch of the Nile. Image credit: Ghoneim et al., doi: 10.1038/s43247-024-01379-7.

Majority of Egyptian Pyramids Was Built along Long-Lost Branch of Nile, Archaeologists Say

May 21, 2024 by News Staff

Archaeologists in Egypt have identified segments of a 64-km-long extinct branch of the river Nile, which they name the Ahramat Branch, running at the foothills...

Mediterranean diet is inversely associated with the severity of symptoms related to anxiety and stress.

Mediterranean Diet Reduces Anxiety and Lessens Stress, Study Suggests

May 21, 2024 by Natali Anderson

In new research, scientists from the University of the Sunshine Coast and the University of South Australia found that adherence to a Mediterranean diet...

The Hitra man was around 169 cm tall, fair-haired and blue-eyed. Image credit: Thomas Foldberg / Åge Hojem / NTNU University Museum.

Norwegian Archaeologists Unveil Face of Stone Age Hitra Man

May 20, 2024 by News Staff

The 4,000-year-old skeletal remains of a Scandinavian man were found in 1916 on the island of Hitra, Norway. The Hitra man was around 169 cm tall, fair-haired...

Using the latest archaeological data, hindcasted climate projections, and age-structured demographic models, Bradshaw et al. demonstrate evidence for early arrival (14,257 to 13,182 years ago) to Cyprus and predicted that large groups of people (1,000 to 1,375) arrived in 2 to 3 main events occurring within less than 100 years to ensure low extinction risk. Image credit: Bradshaw et al., doi: 10.1073/pnas.2318293121.

Hunter-Gatherers Settled in Cyprus Thousands of Years Earlier than Previously Thought

May 20, 2024 by News Staff

Because of persisting narratives of isolation, inaccessibility, and unattractiveness, the initial peopling of one of the eastern Mediterranean islands...

Casati et al. demonstrated experimentally the solar-trapping effect at temperatures as high as 1,050 degrees Celsius; by using quartz as the volumetric absorption medium, they performed stagnation experiments under concentrated thermal radiation and achieved steady-state temperature differences between the absorber and the outer surface of about 600 degrees Celsius. Image credit: Casati et al., doi: 10.1016/j.device.2024.100399.

Researchers Demonstrate Thermal Trapping of Solar Radiation at 1,922 Degrees Fahrenheit

May 15, 2024 by News Staff

With the world focusing on decarbonizing electricity and transportation, abating emissions from industrial process heat remain the elephant in the room....

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