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"Early Mesoamericans trapped fish far earlier than previously thought."

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Russ Roberts (https://hawaiisciencejournal.blogspot.com).

 

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Early Mesoamericans trapped fish far earlier than previously thought

Ancient fish traps supported Maya civilization

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ScienceDaily / 1d

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.

Probiotic may counteract fire-retardant chemical damage

ScienceDaily / 1d

Polybrominated diphenyl ethers, or PBDEs, are fire-retardant chemicals that are found everywhere. A mouse study reports that probiotic supplementation can reduce the negative impacts of PBDEs on neurodevelopment, behavior, and metabolism.

Ancient hot water on Mars points to habitable past

Ancient Mars had hot water evidence

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ScienceDaily / 3h

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.

Yesterday

Exploring the impact of offshore wind on whale deaths

ScienceDaily / 22h

Scientists have presented work examining the circumstances surrounding the whale deaths off the coast of New Jersey in the winter of 2022-23, which prompted concern that survey work in the area somehow contributed to their deaths. The Marine Mammal Commission has stated there is no evidence linking the whales' deaths to wind energy development; many of them died from collisions with ships. Researc

The Parasaurolophus' pipes: Modeling the dinosaur's crest to study its sound

Scientists model Parasaurolophus sounds

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ScienceDaily / 22h

Scientists have presented results on the acoustic characteristics of a physical model of the Parasaurolophus' crest. They created a physical setup made of tubes to represent a mathematical model that will allow researchers to discover what was happening acoustically inside the crest. The physical model, inspired by resonance chambers, was suspended by cotton threads and excited by a small speaker,

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

ScienceDaily / 23h

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.

Troubling spike in severe pregnancy-related complications

Illinois pregnancy complications rise sharply

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ScienceDaily / 23h

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.

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

H2S-Prdx4 axis enhances T cell therapy

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ScienceDaily / 1d

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.

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

ScienceDaily / 1d

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.

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

ScienceDaily / 1d

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.

Engineered additive makes low-cost renewable energy storage a possibility

ScienceDaily / 1d

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.

New insights into sleep uncover key mechanisms related to cognitive function

Sleep enhances cognitive function mechanisms

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ScienceDaily / 1d

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.

Researchers develop an efficient way to train more reliable AI agents

MIT develops efficient AI training

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ScienceDaily / 1d

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.

New model of neuronal circuit provides insight on eye movement

Zebrafish reveal eye movement circuitry

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ScienceDaily / 1d

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

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

Researchers enhance mRNA delivery methods

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ScienceDaily / 1d

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.

Peaches spread across North America through Indigenous networks

ScienceDaily / 1d

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.

Scientists identify key mechanism in development of skin cancer

ScienceDaily / 1d

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

Standing at work can be detrimental to blood pressure

ScienceDaily / 1d

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.

Here's something Americans agree on: Sports build character

Americans believe sports build character

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ScienceDaily / 1d

In a polarized nation, there is one thing that nearly all Americans agree on, according to a recent study: sports are good for us. Researchers found that more than 9 out of 10 Americans agreed that sports build character and improved one's health, while 84% agreed playing sports makes one popular in school and 85% said it makes one more well-known in the community.

A groundbreaking new approach to treating chronic abdominal pain

New oral painkiller targets abdominal pain

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ScienceDaily / 1d

A research team has developed a new class of oral peptide therapeutic leads for treating chronic abdominal pain. This groundbreaking innovation offers a safe, non-opioid-based solution for conditions such as irritable bowel syndrome (IBS) and inflammatory bowel diseases (IBD), which affect millions of people worldwide.

Caste differentiation in ants

ScienceDaily / 1d

Scientists have revealed how a specific hormone regulates ant caste differentiation by phenotypic measurements of organ-level developmental changes and matching transcriptome analyses.

In Patagonia, more snow could protect glaciers from melt -- but only if we curb greenhouse gas emissions soon

ScienceDaily / 1d

In an era of dwindling glaciers, Southern Patagonia has managed to hold on to a surprising amount of its ice. But, a new study suggests that this protective effect might be pushed up against its limits soon.

Scientists develop groundbreaking method for detecting DNA of invasive snakes in Florida

UF scientists detect invasive snake DNA

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ScienceDaily / 1d

Scientists have developed a pioneering tool that can pinpoint where invasive species have been, aiding eradication efforts.

Study on gene regulation with surprising results

ScienceDaily / 1d

Some sequences in the genome cause genes to be switched on or off. Until now, each of these gene switches, or so-called enhancers, was thought to have its own place on the DNA. Different enhancers are therefore separated from each other, even if they control the same gene, and switch it on in different parts of the body. A recent study challenges this idea. The findings are also important because

3.2 million km/h galaxy smash-up

Galaxies collide at 2 million mph

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ScienceDaily / 1d

A massive collision of galaxies sparked by one travelling at a scarcely-believable 2 million mph (3.2 million km/h) has been seen in unprecedented detail by one of Earth's most powerful telescopes. The dramatic impact was observed in Stephan's Quintet, a nearby galaxy group made up of five galaxies first sighted almost 150 years ago. It sparked an immensely powerful shock akin to a 'sonic boom fro

Less than 50% of many prenatal supplements have the adequate amount of choline and iodine

Prenatal vitamins often inadequate harmful

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ScienceDaily / 1d

New research reveals many prenatal vitamins don't contain enough of the nutrients that are essential for a healthy pregnancy, while others contain harmful levels of toxic metals. The study checked the amounts of choline and iodine in nonprescription and prescription prenatal vitamins. The research also checked for toxic metals like arsenic, lead and cadmium. The researchers tested a sample of 47 d

Florida panthers deemed unaffected by emerging fatal genetic condition

ScienceDaily / 1d

Biologists have determined that Florida panthers are likely not at increased risk for contracting chronic wasting disease from eating infected deer.

Researchers identify previously unknown compound in drinking water

New toxic by-product in drinking water

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ScienceDaily / 1d

Researchers have reported the discovery of a previously unknown compound in chloraminated drinking water. Inorganic chloramines are commonly used to disinfect drinking water to safeguard public health from diseases like cholera and typhoid fever.

New imaging method enables detailed RNA analysis of the whole brain

New method enables brain RNA analysis

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ScienceDaily / 1d

Researchers have developed a groundbreaking microscopy method that enables detailed three-dimensional (3D) RNA analysis at cellular resolution in whole intact mouse brains. The new method, called TRISCO, has the potential to transform our understanding of brain function, both in normal conditions and in disease, according to the new study.

From food crops to cancer clinics: Lessons in extermination resistance

ScienceDaily / 1d

Researchers explore how established agricultural pest management strategies could be adapted to address cancer therapy. The pioneering method opens new possibilities for controlling drug resistance and improving patient survival.

Your child, the sophisticated language learner

ScienceDaily / 1d

Sentences contain subtle hints in their grammar that tell young children about the meaning of new words, according to new research.

Confidence drives feedback-seeking behavior: Insights into learning and motivation

ScienceDaily / 1d

New research reveals how low confidence drives feedback-seeking, enhancing learning with insights for education and rehabilitation strategies.