lundi 16 septembre 2024

SCIENCES ENERGIES ENVIRONNEMENT

 Dear olivier hartmanshenn,

Here is your customized Science X Newsletter for week 37:

Earth to have new mini-moon for two months

A pair of asteroid dynamics researchers from Universidad Complutense de Madrid Ciudad Universitaria have found that a small asteroid will make one orbit around the Earth starting this month before departing back into other parts of the solar system.

Climate change-triggered landslide unleashes a 650-foot mega-tsunami

In September 2023, scientists around the world detected a mysterious seismic signal that lasted for nine straight days. An international team of scientists, including seismologists Alice Gabriel and Carl Ebeling of UC San Diego's Scripps Institution of Oceanography came together to solve the mystery.

Observational study supports century-old theory that challenges the Big Bang

A Kansas State University engineer recently published results from an observational study in support of a century-old theory that directly challenges the validity of the Big Bang theory.

Paleontologists discover fossil birds with teeth had seeds in their stomachs, indicating that they ate fruit

For paleontologists who study animals that lived long ago, fossilized remains tell only part of the story of an animal's life. While a well-preserved skeleton can provide hints at what an ancient animal ate or how it moved, irrefutable proof of these behaviors is hard to come by. But sometimes, scientists luck out with extraordinary fossils that preserve something beyond the animal's body.

Geoscientists detect rapid uplift at unique volcano in Tanzania

When a volcano is about to erupt, the surrounding land puffs up like a squeezed balloon. The technical term is "transient deformation," and Virginia Tech researchers have detected and tracked this short-lived movement for the first time using satellite observations of Ol Doinyo Lengai, an active Tanzanian volcano.

Archaeologists discover an ancient Neanderthal lineage that remained isolated for over 50,000 years

A fossilized Neanderthal discovered in a cave system in the Rhône Valley, France, represents an ancient and previously undescribed lineage that diverged from other currently known Neanderthals around 100,000 years ago and remained genetically isolated for more than 50,000 years.

Voyager 1 team accomplishes tricky thruster swap

Engineers working on NASA's Voyager 1 probe have successfully mitigated an issue with the spacecraft's thrusters, which keep the distant explorer pointed at Earth so that it can receive commands, send engineering data, and provide the unique science data it is gathering.

Ancient DNA from Rapa Nui (Easter Island) refutes best-selling population collapse theory

Rapa Nui or Te Pito o Te Henua (the navel of the world), also known as Easter Island, is one of the most isolated inhabited places in the world. Located in the Pacific, it lies over 1,900 km east of the closest inhabited Polynesian island and 3,700 km west of South America.

Atrial fibrillation estimated to be three times more common than previously thought

Atrial fibrillation, a rapid, irregular heart beat that can lead to stroke or sudden death, is three times more common than previously thought, affecting nearly 5% of the population, or 10.5 million U.S. adults, according to new estimates from UC San Francisco.

Most detailed study yet of seismic activity links fault strength to likelihood of large earthquakes

Located on the Pacific Ring of Fire, Japan is one of the most earthquake-prone countries in the world, with thousands of small earthquakes occurring each year, and the continuous threat of a "big one." Currently, predicting when major earthquakes will occur isn't possible, but by studying the numerous small earthquakes that occur, seismologists in Japan hope to understand more about the processes in the Earth's crust that lead to major quakes.

Archaeologists suggest Neolithic Scandinavians may have used skin boats to hunt, travel and trade

Recent research by Dr. Mikael Fauvelle and his colleagues, published in the Journal of Maritime Archaeology, proposes that the neolithic Pitted Ware Culture (PWC) may have used skin boats to conduct trade, travel, fishing, and hunting activities.

How genes shape personality traits: New links discovered

Your DNA has long been known to play a role in shaping your personality. Now, researchers at Yale School of Medicine (YSM) have taken another step in determining exactly how by identifying a number of new genetic sites associated with specific personality traits. They published their findings in Nature Human Behaviour.

Hubble and Chandra find supermassive black hole duo

Like two Sumo wrestlers squaring off, the closest confirmed pair of supermassive black holes have been observed in tight proximity. These are located approximately 300 light-years apart and were detected using NASA's Hubble Space Telescope and the Chandra X-ray Observatory. These black holes, buried deep within a pair of colliding galaxies, are fueled by infalling gas and dust, causing them to shine brightly as active galactic nuclei (AGN).

A gun safety paradox: Study finds some precautions linked to riskier storage practices

Rutgers Health researchers have found that parents who actively teach their children how to handle or shoot firearms are more likely to store loaded guns in unsecured locations.

Odds of asteroid 99942 Apophis striking Earth slightly higher than thought

An astrophysicist at the University of Western Ontario finds that the odds of the asteroid 99942 Apophis striking Earth are slightly higher than previously thought. In his study, published in The Planetary Science Journal, Paul Wiegert took a new look at the possibility of a smaller asteroid striking Apophis and changing its trajectory to a collision course with Earth.

How a failed switch won the Nobel Prize

In 2016, University of Groningen Professor of Organic Chemistry Ben Feringa and two of his colleagues were awarded the Nobel Prize in Chemistry for having created "the world's tiniest machines." Feringa had built a light-driven motor comprising one single molecule. The scientific article describing this molecular motor was published 25 years ago, on 9 September 1999, in Nature.

Report outlines a path to prosperity for planet and people if Earth's critical resources are better shared

Earth will only remain able to provide even a basic standard of living for everyone in the future if economic systems and technologies are dramatically transformed and critical resources are more fairly used, managed and shared, according to an international research team including scientists from The Australian National University (ANU).

Astronomers discover new planet in Great Bear constellation

Astronomers from the Nicolaus Copernicus University in Torun have discovered a new planet in the constellation of the Great Bear. It has a mass as much as 11 times that of Jupiter, orbits its star in 14 years and has a temperature of no more than minus 100 degrees Celsius.

How the brain's inner chamber governs our state of consciousness

In hospital operating rooms and intensive care units, propofol is a drug of choice, widely used to sedate patients for their comfort or render them fully unconscious for invasive procedures.

Research reveals reality of puberty for Ice Age teens from 25,000 years ago

New research shows Ice Age teens from 25,000 years ago went through similar puberty stages as modern-day adolescents. In a study published today in the Journal of Human Evolution of the timing of puberty in Pleistocene teens, researchers are addressing a knowledge gap about how early 

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