sciences energies environnement

 Dear olivier hartmanshenn,

Here is your customized Science X Newsletter for week 36:

	Newly discovered comet visible in night sky this weekend A comet called Nishimura discovered just a month ago could be visible to the naked eye this weekend, offering stargazers a once-in-a-437-year chance to observe the celestial visitor.
	Across the Northern Hemisphere, now's the time to catch a new comet before it vanishes for 400 years A newly discovered comet is swinging through our cosmic neighborhood for the first time in more than 400 years.
	Vast bubble of galaxies discovered, given Hawaiian name A University of Hawaiʻi-led discovery of an immense bubble 820 million light years from Earth is believed to be a fossil-like remnant of the birth of the universe. Astronomer Brent Tully from the UH Institute for Astronomy and his team unexpectedly found the bubble within a web of galaxies. The entity has been given the name Hoʻoleilana, a term drawn from the Kumulipo, a Hawaiian creation chant evoking the origin of structure.
	A Norwegian man needed a hobby. His new metal detector found a showy 1,500-year-old gold necklace At first, the Norwegian man thought his metal detector reacted to chocolate money buried in the soil. It turned out to be nine pendants, three rings and 10 gold pearls someone might have worn as showy jewelry 1,500 years ago.
	Study hints at the existence of the closest black holes to Earth in the Hyades star cluster A paper published in the journal Monthly Notices of the Royal Astronomical Society hints at the existence of several black holes in the Hyades cluster—the closest open cluster to our solar system—which would make them the closest black holes to Earth ever detected.
	Agriculture study on cover crops mixtures delivers unexpected results Farmers usually plant cover crops after harvesting their main crop. This prevents erosion of the soil and nutrient leaching. The roots of these crops also stabilize the structure of the soil. It had been assumed that a mixture of different cover crops would result in particularly intensive rooting.
	It's reassuring to think humans are evolution's ultimate destination—but research shows we may be an accident Depending upon how you do the counting, there are around 9 million species on Earth, from the simplest single-celled organisms to humans.
	New physics-based self-learning machines could replace current artificial neural networks and save energy Artificial intelligence not only affords impressive performance, but also creates significant demand for energy. The more demanding the tasks for which it is trained, the more energy it consumes.
	Research team develops 2-liter class hydrogen engine capable of running entirely on hydrogen Amid the fierce competition throughout the globe to develop hydrogen mobility technologies to achieve carbon neutrality, a new technology for a 2-liter class hydrogen-fueled engine (a passenger car hydrogen engine) capable of running entirely on hydrogen has been developed for the first time in Korea.
	Researchers use AI to find new magnetic materials without critical elements A team of scientists from Ames National Laboratory has developed a new machine learning model for discovering critical-element-free permanent magnet materials. The model predicts the Curie temperature of new material combinations. It is an important first step in using artificial intelligence to predict new permanent magnet materials. This model adds to the team's recently developed capability for discovering thermodynamically stable rare earth materials. The work is published in Chemistry of Materials.
	Speech study finds classic Georgia accent fading fast A collaborative study between the University of Georgia and Georgia Tech has found the classic Southern accent is undergoing rapid change in Georgia. The instigator? Generation X.
	New cosmological constraints on the nature of dark matter New research, published in The Astrophysical Journal, has revealed the distribution of dark matter in never-before-seen detail, down to a scale of 30,000 light-years. The observed distribution fluctuations provide better constraints on the nature of dark matter.
	The discovery of a new kind of cell shakes up neuroscience A research team from University of Lausanne (UNIL) and the Wyss Center, has discovered a new type of cell essential for brain function. Hybrid in composition and function, in between the two types of brain cells known so far—the neurons and the glial cells—these cells of a new order are present in several brain regions in mice and humans.
	Study suggests human shoulders and elbows first evolved as brakes for climbing apes The rotating shoulders and extending elbows that allow humans to reach for a high shelf or toss a ball with friends may have first evolved as a natural braking system for our primate ancestors who simply needed to get out of trees without dying.
	Astronomers discover new massive quiescent galaxy Astronomers report the discovery of a new massive and quiescent galaxy at a high redshift. The galaxy, which received designation COSMOS-1047519, was detected using the Keck I telescope. The finding was detailed in a paper published August 29 on the pre-print server arXiv.
	Rubber plumbing seals can leak additives into drinking water, study says As drinking water flows through pipes and into a glass, it runs against the rubber seals inside some plumbing devices. These parts contain additives that contribute to their flexibility and durability, but these potentially harmful compounds can leak into drinking water, according to a small-scale study in Environmental Science & Technology Letters. The authors report that the released compounds, which are typically linked to tire pollution, also transformed into other unwanted byproducts.
	Scientists make the first observation of a nucleus decaying into four particles after beta decay Not all of the material around us is stable. Some materials may undergo radioactive decay to form more stable isotopes. Scientists have now observed a new decay mode for the first time. In this decay, a lighter form of oxygen, oxygen-13 (with eight protons and five neutrons), decays by breaking into three helium nuclei (an atom without the surrounding electrons), a proton, and a positron (the antimatter version of an electron).
	New research finds a disconnect between poultry dietary energy and egg production In previous research, feed intake and egg production parameters were the most common response criteria that researchers used to measure energy responses in poultry.
	Physicists solve mysteries of microtubule movers Active matter is any collection of materials or systems composed of individual units that can move on their own, thanks to self-propulsion or autonomous motion. They can be of any size—think clouds of bacteria in a petri dish, or schools of fish.
	Many people hate wasps, but research shows they're smarter than you might think and ecologically important Everybody loves bees, but their cousins the wasps often provoke a far less friendly reaction. The much-maligned insects often inspire fear, disgust or even the "kill it with fire" response.

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