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ScienceDaily · 11/25/2024 12:48 EDT

Herodotus' theory on Armenian origins debunked by first whole-genome study

Armenians, a population in Western Asia historically inhabiting the Armenian highlands, were long believed to be descendants of Phrygian settlers from the Balkans. This theory originated largely from the accounts of the Greek historian Herodotus, who observed that Armenians were armed in Phrygian fashion when serving in the Persian army. Linguists further supported this theory, suggesting that the Armenian language shares ties with the Thraco-Phrygian subgroup of Indo-European languages. But... Read more ›

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ScienceDaily
ScienceDaily · 11/25/2024 12:47 EDT

Cyanobacterial circadian clock uses an AM radio-like mechanism to control cellular processes

Cyanobacteria, an ancient lineage of bacteria that perform photosynthesis, have been found to regulate their genes using the same physics principle used in AM radio transmission. Read more ›

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ScienceDaily
ScienceDaily · 11/25/2024 12:47 EDT

Electrical nerve stimulation eases long COVID pain and fatigue, study finds

A wearable electrical nerve stimulation device can provide relief to people experiencing the persistent pain and fatigue linked to long COVID, according to new research. Read more ›

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ScienceDaily
ScienceDaily · 11/25/2024 12:47 EDT

Most energetic cosmic-ray electrons and positrons ever observed

Scientists have recently identified electrons and positrons with the highest energies ever recorded on Earth. They provide evidence of cosmic processes emitting colossal amounts of energy, the origins of which are as yet unknown. Read more ›

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ScienceDaily
ScienceDaily 2 place · 11/22/2024 18:53 EDT

Troubling spike in severe pregnancy-related complications

A new study reveals a troubling rise in severe maternal health issues and birth complications in Illinois from 2016 to 2023, closely linked to increases in chronic health conditions affecting pregnancy, such as high blood pressure, gestational diabetes, mental health disorders and especially obesity, which saw the largest increase in annual rates. Read more ›

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ScienceDaily
ScienceDaily 1 place · 11/22/2024 18:53 EDT

Overthinking what you said? It's your 'lizard brain' talking to newer, advanced parts of your brain

Scientists sought to better understand how humans evolved to become so skilled at thinking about what's happening in other peoples' minds. The findings could have implications for one day treating psychiatric conditions such as anxiety and depression. Read more ›

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ScienceDaily
ScienceDaily 1 place · 11/22/2024 17:27 EDT

New gene drive reverses insecticide resistance in pests... then disappears

Geneticists have developed a gene drive-based solution to the widespread problem of insecticide resistance. In an effort to protect valuable crops, the researchers created an 'e-Drive' that reverses insecticide resistance and then disappears from the insect population. Read more ›

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ScienceDaily
ScienceDaily 3 place · 11/22/2024 17:27 EDT

How Golgi stress affects T-cells' tumor-fighting ability

Researchers investigating ways to reduce exhaustion in cancer-fighting T-cells found that the Golgi apparatus can be used as a simple marker -- more Golgi means a more robust cell. Read more ›

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ScienceDaily
ScienceDaily · 11/22/2024 16:15 EDT

3D-printing advance mitigates three defects simultaneously for failure-free metal parts

Engineers have found a way to simultaneously mitigate three types of defects in parts produced using a prominent additive manufacturing technique called laser powder bed fusion. Read more ›

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ScienceDaily
ScienceDaily · 11/22/2024 16:08 EDT

Peaches spread across North America through Indigenous networks

Spanish explorers may have brought the first peach pits to North America, but Indigenous communities helped the ubiquitous summer fruit really take root, according to a new study. Read more ›

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ScienceDaily
ScienceDaily 1 place · 11/22/2024 16:07 EDT

Early Mesoamericans trapped fish far earlier than previously thought

Archaeologists have collected data which indicates the presence of a large-scale pre-Columbian fish-trapping facility. Discovered in the Crooked Tree Wildlife Sanctuary (CTWS), the largest inland wetland in Belize, the team dated the construction of these fisheries to the Late Archaic period (cal. 2000-1900 BCE), pre-dating Amazonian examples by a thousand years or more. Read more ›

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ScienceDaily
ScienceDaily · 11/22/2024 16:07 EDT

New insights into sleep uncover key mechanisms related to cognitive function

While it's well known that sleep enhances cognitive performance, the underlying neural mechanisms, particularly those related to nonrapid eye movement (NREM) sleep, remain largely unexplored. A new study has nonetheless uncovered a key mechanism by which sleep enhances neuronal and behavioral performance, potentially changing our fundamental understanding of how sleep boosts brainpower. Read more ›

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ScienceDaily
ScienceDaily 2 place · 11/22/2024 16:07 EDT

Engineered additive makes low-cost renewable energy storage a possibility

As part of an effort to overcome the long-term energy-storage challenge, engineers have invented a water-soluble chemical additive that improves the performance of a type of electrochemical storage called a bromide aqueous flow battery. Read more ›

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ScienceDaily
ScienceDaily · 11/22/2024 16:07 EDT

Ancient hot water on Mars points to habitable past

New research has uncovered what may be the oldest direct evidence of ancient hot water activity on Mars, revealing the planet may have been habitable at some point in its past. Read more ›

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ScienceDaily
ScienceDaily · 11/22/2024 13:06 EDT

Researchers develop an efficient way to train more reliable AI agents

Researchers developed an efficient approach for training more reliable reinforcement learning models, focusing on complex tasks that involve variability. This could enable the leverage of reinforcement learning across a wide range of applications. Read more ›

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ScienceDaily
ScienceDaily 3 place · 11/22/2024 13:06 EDT

Scientists identify key mechanism in development of skin cancer

Researchers have discovered how the interplay between a key protein and an endolysosomal ion channel promotes tumor development in skin cancer. Read more ›

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ScienceDaily
ScienceDaily · 11/22/2024 13:06 EDT

New model of neuronal circuit provides insight on eye movement

Working with week-old zebrafish larva, researchers decoded how the connections formed by a network of neurons in the brainstem guide the fishes' gaze. The study found that a simplified artificial circuit, based on the architecture of this neuronal system, can predict activity in the network. In addition to shedding light on how the brain handles short-term memory, the findings could lead to novel approaches for treating eye movement disorders. Read more ›

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ScienceDaily
ScienceDaily · 11/22/2024 13:05 EDT

Standing at work can be detrimental to blood pressure

A new study found that prolonged standing at work had a negative impact on the research participants' 24-hour blood pressure. In contrast, spending more time sitting at work was associated with better blood pressure. The study suggests that activity behavior during working hours may be more relevant to 24-hour blood pressure than recreational physical activity. Read more ›

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ScienceDaily
ScienceDaily · 11/22/2024 13:05 EDT

Cooking up a breakthrough: Engineers refine lipid nanoparticles for better mRNA therapies

Engineers have cooked up a new way to improve mRNA delivery, developing an optimal 'recipe' for ionizable lipids -- key ingredients in lipid nanoparticles (LNPs), the molecules behind the COVID-19 vaccines and other innovative therapies. The method mirrors the iterative process of developing a culinary dish and may lead to safer, more effective mRNA vaccines and therapeutics. Read more ›

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