
Study reveals brain pathway behind metformin's blood sugar-lowering effects
Although metformin has been the go-to medication to manage type 2 diabetes for more than 60 years, researchers still do not have a complete picture of how it works.

Trapping gut bacteria's hidden fuel improves blood sugar and liver health, study shows
A team of Canadian scientists has discovered a surprising new way to improve blood sugar levels and reduce liver damage: by trapping a little-known fuel made by gut bacteria before they wreak havoc on the body.

Early human ancestors showed extreme size differences between males and females
A newly published study has found that males of some of our earliest known ancestors were significantly larger than females. The pronounced difference in body size present in both Australopithecus afarensis (the East African species that includes the famous fossil "Lucy") and A. africanus (a closely related southern African species) suggests the ancient hominins may have lived in social systems marked by intense competition among males, leading to the substantial size disparity among the sexes.

A record catch of krill near Antarctica could trigger an unprecedented end to fishing season
Trawling near Antarctica for krill—a crustacean central to the diet of whales and a critical buffer to global warming—has surged to a record and is fast approaching a never before reached seasonal catch limit that would trigger the unprecedented early closure of the remote fishery, The Associated Press has learned.

Progress in gene therapy offers hope for long-term knee pain relief
For nearly three decades, Mayo Clinic researcher Christopher Evans, Ph.D., has pushed to expand gene therapy beyond its original scope of fixing rare, single-gene defects. That has meant systematically advancing the field through laboratory experiments, pre-clinical studies and clinical trials.

Famous double-slit experiment holds up when stripped to its quantum essentials
MIT physicists have performed an idealized version of one of the most famous experiments in quantum physics. Their findings demonstrate, with atomic-level precision, the dual yet evasive nature of light. They also happen to confirm that Albert Einstein was wrong about this particular quantum scenario.

Distorted sound of the early universe suggests we are living in a giant void
Looking up at the night sky, it may seem our cosmic neighborhood is packed full of planets, stars and galaxies. But scientists have long suggested there may be far fewer galaxies in our cosmic surroundings than expected.

Changes in diet drove physical evolution in early humans
As early humans spread from lush African forests into grasslands, their need for ready sources of energy led them to develop a taste for grassy plants, especially grains and the starchy plant tissue hidden underground.

'Whale poop loop' keeps ocean and humans alive and well
Whales of all shapes and sizes play a significant role in the health of marine ecosystems. About 50% of the air humans breathe is produced by the ocean, thanks to phytoplankton and whale waste. The Whale Poop Loop is the foundation of the marine food web and the planet's lungs.

Marathon Fusion claims it can turn mercury into gold while creating clean energy
A startup energy company, called Marathon Fusion, may soon be living out the dream of alchemists from the Middle Ages. In a recently released paper posted to the arXiv preprint server, the company outlines a method to turn an isotope of mercury, 198Hg, into 197Au, the most stable form of gold.

New device converts plastic waste into fuel using catalyst-free pyrolysis
As tons of plastic waste continue to build up in landfills every day, Yale researchers have developed a way to convert this waste into fuels and other valuable products efficiently and cheaply. The results are published in Nature Chemical Engineering.

Shroud of Turin image matches low-relief statue—not human body, 3D modeling study finds
The Shroud of Turin is a famous artifact with obscure origins. How and when it was made has long been the subject of debate among many scientists, historians and religious leaders, alike. The two most prominent theories are that it was either created as a work of art during the medieval period or that it was a piece of linen that was actually wrapped around the body of Jesus Christ after his death over 2000 years ago.

Gray wolves carry young pups over rugged terrain to track spring elk migration
Gray wolf pups are born nearly helpless: blind, deaf and lacking the acute sense of smell of their elders. They usually remain in the safe confines of their den until they are at least three weeks old.

Dam removal restores aquatic ecosystem within three years
The ecology of an upstate New York stream rebounded to its natural state within three years after a small dam was removed, highlighting how quickly aquatic ecosystems can recover, according to a new study.

Cardiovascular disease linked to lower physical activity 12 years before onset
A multi-institution team of investigators report that adults who later develop cardiovascular disease show declining physical activity levels beginning roughly 12 years before their event, with the gap versus their healthy peers persisting long afterward.

Scientists identify shared biological roots of long COVID and chronic fatigue syndrome
In recent years, doctors and scientists are increasingly studying long-lasting illnesses that begin after someone recovers from an infection. Two of the most well-known examples are long COVID and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).

Study revises 'living fossil' fish anatomy, reshaping view of vertebrate skull evolution
The coelacanth is known as a "living fossil" because its anatomy has changed little in the last 65 million years. Despite being one of the most studied fish in history, it continues to reveal new information that could transform our understanding of vertebrate evolution. This is revealed in a study published in the journal Science Advances by researchers from the University of São Paulo (USP) in Brazil and the Smithsonian Institution in the United States.

Bringing metallurgy into the 21st century: Precisely shaped metal objects provide unprecedented alloy control
Caltech scientists have developed a method to create metallic objects of a precisely specified shape and composition, giving them unprecedented control of the metallic mixtures, or alloys, they create and the enhanced properties those creations will display. Want a stent that is biocompatible and mechanically robust? How about strong but lightweight satellite components that can operate in space for decades?

New drug helps immune system target liver cancer by blocking fat metabolism
Liver cancer cells thrive on fat, posing a serious risk of cancer diagnosis for millions of people living with fatty liver disease. But researchers at McMaster University in collaboration with Espervita Therapeutics have developed a promising new treatment that helps the immune system attack and destroy these tumors.

Image: Webb takes a fresh look at a classic deep field
This image from the NASA/ESA/CSA James Webb Space Telescope revisits one of the most iconic regions of the sky, the Hubble Ultra Deep Field, through the eyes of two of Webb's instruments. The result is a detailed view that reveals thousands of distant galaxies, some dating back to the earliest periods of cosmic history.

Study reveals brain pathway behind metformin's blood sugar-lowering effects
Although metformin has been the go-to medication to manage type 2 diabetes for more than 60 years, researchers still do not have a complete picture of how it works.

Trapping gut bacteria's hidden fuel improves blood sugar and liver health, study shows
A team of Canadian scientists has discovered a surprising new way to improve blood sugar levels and reduce liver damage: by trapping a little-known fuel made by gut bacteria before they wreak havoc on the body.

Early human ancestors showed extreme size differences between males and females
A newly published study has found that males of some of our earliest known ancestors were significantly larger than females. The pronounced difference in body size present in both Australopithecus afarensis (the East African species that includes the famous fossil "Lucy") and A. africanus (a closely related southern African species) suggests the ancient hominins may have lived in social systems marked by intense competition among males, leading to the substantial size disparity among the sexes.

A record catch of krill near Antarctica could trigger an unprecedented end to fishing season
Trawling near Antarctica for krill—a crustacean central to the diet of whales and a critical buffer to global warming—has surged to a record and is fast approaching a never before reached seasonal catch limit that would trigger the unprecedented early closure of the remote fishery, The Associated Press has learned.

Progress in gene therapy offers hope for long-term knee pain relief
For nearly three decades, Mayo Clinic researcher Christopher Evans, Ph.D., has pushed to expand gene therapy beyond its original scope of fixing rare, single-gene defects. That has meant systematically advancing the field through laboratory experiments, pre-clinical studies and clinical trials.

Famous double-slit experiment holds up when stripped to its quantum essentials
MIT physicists have performed an idealized version of one of the most famous experiments in quantum physics. Their findings demonstrate, with atomic-level precision, the dual yet evasive nature of light. They also happen to confirm that Albert Einstein was wrong about this particular quantum scenario.

Distorted sound of the early universe suggests we are living in a giant void
Looking up at the night sky, it may seem our cosmic neighborhood is packed full of planets, stars and galaxies. But scientists have long suggested there may be far fewer galaxies in our cosmic surroundings than expected.

Changes in diet drove physical evolution in early humans
As early humans spread from lush African forests into grasslands, their need for ready sources of energy led them to develop a taste for grassy plants, especially grains and the starchy plant tissue hidden underground.

'Whale poop loop' keeps ocean and humans alive and well
Whales of all shapes and sizes play a significant role in the health of marine ecosystems. About 50% of the air humans breathe is produced by the ocean, thanks to phytoplankton and whale waste. The Whale Poop Loop is the foundation of the marine food web and the planet's lungs.

Marathon Fusion claims it can turn mercury into gold while creating clean energy
A startup energy company, called Marathon Fusion, may soon be living out the dream of alchemists from the Middle Ages. In a recently released paper posted to the arXiv preprint server, the company outlines a method to turn an isotope of mercury, 198Hg, into 197Au, the most stable form of gold.

New device converts plastic waste into fuel using catalyst-free pyrolysis
As tons of plastic waste continue to build up in landfills every day, Yale researchers have developed a way to convert this waste into fuels and other valuable products efficiently and cheaply. The results are published in Nature Chemical Engineering.

Shroud of Turin image matches low-relief statue—not human body, 3D modeling study finds
The Shroud of Turin is a famous artifact with obscure origins. How and when it was made has long been the subject of debate among many scientists, historians and religious leaders, alike. The two most prominent theories are that it was either created as a work of art during the medieval period or that it was a piece of linen that was actually wrapped around the body of Jesus Christ after his death over 2000 years ago.

Gray wolves carry young pups over rugged terrain to track spring elk migration
Gray wolf pups are born nearly helpless: blind, deaf and lacking the acute sense of smell of their elders. They usually remain in the safe confines of their den until they are at least three weeks old.

Dam removal restores aquatic ecosystem within three years
The ecology of an upstate New York stream rebounded to its natural state within three years after a small dam was removed, highlighting how quickly aquatic ecosystems can recover, according to a new study.

Cardiovascular disease linked to lower physical activity 12 years before onset
A multi-institution team of investigators report that adults who later develop cardiovascular disease show declining physical activity levels beginning roughly 12 years before their event, with the gap versus their healthy peers persisting long afterward.

Scientists identify shared biological roots of long COVID and chronic fatigue syndrome
In recent years, doctors and scientists are increasingly studying long-lasting illnesses that begin after someone recovers from an infection. Two of the most well-known examples are long COVID and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).

Study revises 'living fossil' fish anatomy, reshaping view of vertebrate skull evolution
The coelacanth is known as a "living fossil" because its anatomy has changed little in the last 65 million years. Despite being one of the most studied fish in history, it continues to reveal new information that could transform our understanding of vertebrate evolution. This is revealed in a study published in the journal Science Advances by researchers from the University of São Paulo (USP) in Brazil and the Smithsonian Institution in the United States.

Bringing metallurgy into the 21st century: Precisely shaped metal objects provide unprecedented alloy control
Caltech scientists have developed a method to create metallic objects of a precisely specified shape and composition, giving them unprecedented control of the metallic mixtures, or alloys, they create and the enhanced properties those creations will display. Want a stent that is biocompatible and mechanically robust? How about strong but lightweight satellite components that can operate in space for decades?

New drug helps immune system target liver cancer by blocking fat metabolism
Liver cancer cells thrive on fat, posing a serious risk of cancer diagnosis for millions of people living with fatty liver disease. But researchers at McMaster University in collaboration with Espervita Therapeutics have developed a promising new treatment that helps the immune system attack and destroy these tumors.

Image: Webb takes a fresh look at a classic deep field
This image from the NASA/ESA/CSA James Webb Space Telescope revisits one of the most iconic regions of the sky, the Hubble Ultra Deep Field, through the eyes of two of Webb's instruments. The result is a detailed view that reveals thousands of distant galaxies, some dating back to the earliest periods of cosmic history.
lundi 4 août 2025
SCIENCES ENERGIES ENVIRONNEMENT BLOGGER
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