Science X Newsletter Week 04

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Here is your customized Science X Newsletter for week 04:

	New research challenges hunter-gatherer narrative The oft-used description of early humans as "hunter-gatherers" should be changed to "gatherer-hunters," at least in the Andes of South America, according to groundbreaking research led by a University of Wyoming archaeologist.
	Food from urban agriculture has carbon footprint six times larger than conventional produce, study shows A new University of Michigan-led international study finds that fruits and vegetables grown in urban farms and gardens have a carbon footprint that is, on average, six times greater than conventionally grown produce.
	Rare decay of the Higgs boson may point to physics beyond the Standard Model Particle physicists have detected a novel decay of the Higgs boson for the first time, revealing a slight discrepancy in the predictions of the Standard Model and perhaps pointing to new physics beyond it. The findings are published in the journal Physical Review Letters.
	Scientists spin naturalistic silk from artificial spider gland Researchers have succeeded in creating a device that spins artificial spider silk that closely matches what spiders naturally produce. The artificial silk gland was able to re-create the complex molecular structure of silk by mimicking the various chemical and physical changes that naturally occur in a spider's silk gland.
	Liquid lithium on the walls of a fusion device helps the plasma within maintain a hot edge Emerging research suggests it may be easier to use fusion as a power source if liquid lithium is applied to the internal walls of the device housing the fusion plasma.
	Japan's precision moon lander has hit its target, but it appears to be upside-down Japan's space agency said Thursday that its first lunar mission hit the tiny patch of the moon's surface it was aiming for, in a successful demonstration of its pinpoint landing system—although the probe appears to be lying upside-down.
	Methane pulses on Mars possibly driven by atmospheric pressure changes New research shows that atmospheric pressure fluctuations that pull gases up from underground could be responsible for releasing subsurface methane into Mars's atmosphere; knowing when and where to look for methane can help the Curiosity rover search for signs of life.
	Researchers engineer bacteria that eat plastic, make multipurpose spider silk Move over Spider-Man: Researchers at Rensselaer Polytechnic Institute have developed a strain of bacteria that can turn plastic waste into a biodegradable spider silk with multiple uses.
	Trump administration rule dramatically deregulates wetlands, streams and drinking water, machine learning study finds The 1972 Clean Water Act protects the "waters of the United States" but does not precisely define which streams and wetlands this phrase covers, leaving it to presidential administrations, regulators, and courts to decide. As a result, the exact coverage of Clean Water Act rules is difficult to estimate.
	Scientists discover the moon is shrinking, causing landslides and instability in lunar south pole Earth's moon shrank more than 150 feet in circumference as its core gradually cooled over the last few hundred million years. In much the same way a grape wrinkles when it shrinks down to a raisin, the moon also develops creases as it shrinks. But unlike the flexible skin on a grape, the moon's surface is brittle, causing faults to form where sections of crust push against one another.
	Unlocking the secrets of the universe through neutrinoless double beta decay The discovery that neutrinos have mass was groundbreaking. However, their absolute mass remains unknown. Neutrinoless double beta decay experiments aim to determine whether neutrinos are their own antiparticles and, if so, provide a means to determine the mass of the neutrino species involved.
	Cultivated meat production costs could fall significantly: Bovine muscle engineered to produce their own growth signals Cellular agriculture—the production of meat from cells grown in bioreactors rather than harvested from farm animals—is taking leaps in technology that are making it a more viable option for the food industry. One such leap has now been made at the Tufts University Center for Cellular Agriculture (TUCCA), led by David Kaplan, Stern Family Professor of Engineering, in which researchers have created bovine (beef) muscle cells that produce their own growth factors, a step that can significantly cut costs of production.
	Manipulated hafnia paves the way for next-generation memory devices Scientists and engineers have been pushing for the past decade to leverage an elusive ferroelectric material called hafnium oxide, or hafnia, to usher in the next generation of computing memory. A team of researchers including the University of Rochester's Sobhit Singh published a study in the Proceedings of the National Academy of Sciences outlining progress toward making bulk ferroelectric and antiferroelectric hafnia available for use in a variety of applications.
	Cells' electric fields keep nanoparticles at bay, scientists confirm The humble membranes that enclose our cells have a surprising superpower: They can push away nano-sized molecules that happen to approach them. A team including scientists at the National Institute of Standards and Technology (NIST) has figured out why, by using artificial membranes that mimic the behavior of natural ones. Their discovery could make a difference in how we design the many drug treatments that target our cells.
	Astronomers investigate the properties of a peculiar cataclysmic variable Astronomers from Turkey and Russia have performed optical observations of a magnetic cataclysmic variable known as SRGA J213151.5+491400. Results of the observational campaign, presented Jan. 11 on the pre-print server arXiv, yield important insights into the properties of this peculiar system.
	New research sheds light on a phenomenon known as 'false vacuum decay' An experiment conducted in Italy, with theory support from Newcastle University, has produced the first experimental evidence of vacuum decay.
	The underground network: Decoding the dynamics of plant-fungal symbiosis The intricate dance of nature often unfolds in mysterious ways, hidden from the naked eye. At the heart of this enigmatic tango lies a vital partnership: the symbiosis between plants and a type of fungi known as arbuscular mycorrhizal (AM) fungi.
	Chemists tie a knot using only 54 atoms A trio of chemists at the Chinese Academy of Sciences' Dalian Institute of Chemical Physics, working with a colleague from the University of Western Ontario, has tied the smallest knot ever, using just 54 atoms. In their study, published in the journal Nature Communications, Zhiwen Li, Jingjing Zhang, Gao Li and Richard Puddephatt accidentally tied the knot while trying to create metal acetylides in their lab.
	Stars travel more slowly at Milky Way's edge: Galaxy's core may contain less dark matter than previously estimated By clocking the speed of stars throughout the Milky Way galaxy, MIT physicists have found that stars further out in the galactic disk are traveling more slowly than expected compared to stars that are closer to the galaxy's center. The findings raise a surprising possibility: The Milky Way's gravitational core may be lighter in mass, and contain less dark matter, than previously thought.
	Astronomers inspect evolution of a nearby Type Ia supernova Using various ground-based telescopes, astronomers have performed photometric and spectroscopic observations of a nearby Type Ia supernova known as SN 2020nlb. Results of the observations campaign, presented January 16 on the pre-print server arXiv, deliver important insights regarding the evolution of this stellar explosion.

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