lundi 1 avril 2024

SCIENCES ENERGIES ENVIRONNEMENT

 Dear olivier hartmanshenn,

Here is your customized Science X Newsletter for week 13:

Why warnings are being issued ahead of next month's total solar eclipse

As next month approaches, anticipation for the 2024 total solar eclipse has set in. The eclipse, which will take place April 8, will be visible from Mexico through Canada, casting a brief moment when day momentarily turns to night.

Researchers find first experimental evidence for a graviton-like particle in a quantum material

A team of scientists from Columbia, Nanjing University, Princeton, and the University of Munster, writing in the journal Nature, have presented the first experimental evidence of collective excitations with spin called chiral graviton modes (CGMs) in a semiconducting material.

The world is one step closer to secure quantum communication on a global scale

Researchers at the University of Waterloo's Institute for Quantum Computing (IQC) have brought together two Nobel prize-winning research concepts to advance the field of quantum communication.

US Moon lander 'permanently' asleep after historic landing: Company

An uncrewed American lander that became the first private spaceship on the moon has met its ultimate end after failing to "wake up," the company that built it said.

Researchers discover evolutionary 'tipping point' in fungi

Scientists have found a "tipping point" in the evolution of fungi that throttles their growth and sculpts their shapes. The findings, published in the journal Cell Reports, demonstrate how small changes in environmental factors can lead to huge changes in evolutionary outcomes.

Two coral snakes recorded battling for prey in a scientific first

Two red-tailed coral snakes have been observed competing over a caecilian in the first documented wild case of kleptoparasitism within the family Elapidae.

Study documents slowing of Atlantic currents

While scientists have observed oceans heating up for decades and theorized that their rising temperatures weaken global currents, a new study led by a University of Maryland researcher documents for the first time a significant slowing of a crucial ocean current system that plays a role in regulating Earth's climate.

Gravitational waves may have made human life possible

Could it be that human existence depends on gravitational waves? Some key elements in our biological makeup may come from astrophysical events that occur because gravitational waves exist, a research team headed by John R. Ellis of Kings College London suggests.

Texas county issues disaster declaration for solar eclipse, expects 200K people

A North Texas county issued a disaster declaration ahead of the April 8 solar eclipse, warning of traffic and potential gridlock as the celestial event ends.

Magnetic avalanche triggered by quantum effects: 'Barkhausen noise' detected for first time

Iron screws and other so-called ferromagnetic materials are made up of atoms with electrons that act like little magnets. Normally, the orientations of the magnets are aligned within one region of the material but are not aligned from one region to the next. Think of packs of tourists in Times Square pointing to different billboards all around them. But when a magnetic field is applied, the orientations of the magnets, or spins, in the different regions line up and the material becomes fully magnetized. This would be like the packs of tourists all turning to point at the same sign.

Researcher proposes a new definition of a human embryo from a legal perspective

Iñigo de Miguel-Beriain, researcher in the UPV/EHU's Research Group on Social and Legal Sciences applied to New Technosciences, has published a paper in EMBO Reports in which he provides a legal perspective to help identify a universally accepted definition of embryo, which could facilitate and standardize its regulation in different countries.

Genetic secrets from 4,000-year-old teeth illuminate the impact of changing human diets over the centuries

Researchers at Trinity College Dublin have recovered remarkably preserved microbiomes from two teeth dating back 4,000 years, found in an Irish limestone cave. Genetic analyses of these microbiomes reveal major changes in the oral microenvironment from the Bronze Age to today. The teeth both belonged to the same male individual and also provided a snapshot of his oral health.

Research shows that five three-horned dinosaurs lived, and died, together

A team from Naturalis Biodiversity Center in the Netherlands was looking for a Tyrannosaurus in the summer of 2013 in Wyoming. Instead, they found a Triceratops: the famous dinosaur with the three horns and the large neck frill. And then they found another one. And another one. And more. The dig turned into a project that would last for more than 10 years.

New topological metamaterial amplifies sound waves exponentially

Researchers at AMOLF, in collaboration with partners from Germany, Switzerland, and Austria, have realized a new type of metamaterial through which sound waves flow in an unprecedented fashion. It provides a novel form of amplification of mechanical vibrations, which has the potential to improve sensor technology and information processing devices.

Making long-term memories requires DNA damage, researchers discover

Just as you can't make an omelet without breaking eggs, scientists at Albert Einstein College of Medicine have found that you can't make long-term memories without DNA damage and brain inflammation. Their surprising findings were published in the journal Nature in a paper titled "Formation of memory assemblies through the DNA sensing TLR9 pathway."

Scientists on the hunt for evidence of quantum gravity's existence at the South Pole

Several thousand sensors distributed over a square kilometer near the South Pole are tasked with answering one of the large outstanding questions in physics: does quantum gravity exist? The sensors monitor neutrinos—particles with no electrical charge and almost without mass—arriving at the Earth from outer space. A team from the Niels Bohr Institute (NBI), University of Copenhagen, has contributed to developing the method that exploits neutrino data to reveal if quantum gravity exists.

Geomagnetic storm from a solar flare could disrupt radio communications and create a striking aurora

Space weather forecasters have issued a geomagnetic storm watch through Monday, saying an ouburst of plasma from a solar flare could interfere with radio transmissions on Earth. It could also make for great aurora viewing.

How wild is the Bengal cat genome?

If you're wondering who holds the title of domestic cat royalty, look no further than the stunning Bengal breed. They take the prize for the most popular breed in The International Cat Association (TICA) registry due to their unique, exotic appearance and affectionate charm of a beloved house companion.

Faintest known star system orbiting the Milky Way discovered

A team of astronomers led by the University of Victoria and Yale University has detected an ancient star system traveling around our galaxy named Ursa Major III / UNIONS 1 (UMa3/U1)—the faintest and lowest-mass Milky Way satellite ever discovered, and possibly one of the most dark matter-dominated systems known.

Dig site findings suggests ancient artists may have been inspired by preserved dinosaur footprints

A team of archaeologists and paleontologists affiliated with several institutions in Brazil has found evidence that ancient artists living in what is now Brazil may have created petroglyphs that were inspired


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