Science X Newsletter Week 46

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Here is your customized Science X Newsletter for week 46:

	How fast you walk says a lot about your health During a doctor's appointment, there's a few measures that quickly get a physician up to speed on our current health, such as measuring blood pressure and checking our BMI. But researchers say it could be helpful to add one more indicator to that list: measuring how fast you walk.
	Infinite-dimensional symmetry opens up possibility of a new physics—and new particles The symmetries that govern the world of elementary particles at the most elementary level could be radically different from what has so far been thought. This surprising conclusion emerges from new work published by theoreticians from Warsaw and Potsdam. The scheme they posit unifies all the forces of nature in a way that is consistent with existing observations and anticipates the existence of new particles with unusual properties that may even be present in our close environs.
	US paves way to get 'lab meat' on plates US authorities on Friday agreed on how to regulate food products cultured from animal cells—paving the way to get so-called "lab meat" on American plates.
	Astronomers discover super-Earth around Barnard's star Astronomers have discovered a planet in orbit around one of the closest stars to the Sun, Barnard's star.
	Physicists build fractal shape out of electrons In physics, it is well-known that electrons behave very differently in three dimensions, two dimensions or one dimension. These behaviours give rise to different possibilities for technological applications and electronic systems. But what happens if electrons live in 1.58 dimensions – and what does it actually mean? Theoretical and experimental physicists at Utrecht University investigated these questions in a new study that will be published in Nature Physics on 12 November.
	Dark matter 'hurricane' offers chance to detect axions A team of researchers from Universidad de Zaragoza, King's College London and the Institute of Astronomy in the U.K. has found that a "dark matter hurricane" passing through our solar system offers a better than usual chance of detecting axions. In their paper published in the journal Physical Review D, the group describes their findings and why they believe their observations could offer help in understanding dark matter.
	NASA Learns More About Interstellar Visitor 'Oumuamua In November 2017, scientists pointed NASA's Spitzer Space Telescope toward the object known as 'Oumuamua—the first known interstellar object to visit our solar system. The infrared Spitzer was one of many telescopes pointed at 'Oumuamua in the weeks after its discovery that October.
	Huge crater discovered in Greenland from impact that rocked Northern Hemisphere A survey of ice in Greenland has uncovered evidence suggesting a kilometer-wide iron asteroid slammed into that island, perhaps as recently as 12,000 years ago during the end of the Pleistocene. The resulting 19-mile-wide impact crater has remained hidden under a half-mile-thick ice sheet until now. It recently was exposed by an ultra-wideband chirp radar system developed at the Center for the Remote Sensing of Ice Sheets (CReSIS) headquartered at the University of Kansas.
	Seismic study reveals huge amount of water dragged into Earth's interior Slow-motion collisions of tectonic plates under the ocean drag about three times more water down into the deep Earth than previously estimated, according to a first-of-its-kind seismic study that spans the Mariana Trench.
	Low-carb diets cause people to burn more calories Most people regain the weight they lose from dieting within one or two years, in part because the body adapts by slowing metabolism and burning fewer calories. A meticulous study led by Boston Children's Hospital, in partnership with Framingham State University, now finds that eating fewer carbohydrates increases the number of calories burned. The findings, published November 14 in the BMJ, suggest that low-carb diets can help people maintain weight loss, making obesity treatment more effective.
	Playing high school football changes the teenage brain A single season of high school football may be enough to cause microscopic changes in the structure of the brain, according to a new study by researchers at the University of California, Berkeley, Duke University and the University of North Carolina at Chapel Hill.
	Gaia spots a 'ghost' galaxy next door The Gaia satellite has spotted an enormous 'ghost' galaxy lurking on the outskirts of the Milky Way.
	Social relationships more important than hard evidence in partisan politics: study The basic human need to get along with others results in the formation of extreme political groupings, according to a study from Dartmouth College.
	How plants evolved to make ants their servants Plants are boring. They just sit there photosynthesizing while animals have all the fun. Right? Not so much. Take a look at the interactions between ants and plants—plants have evolved features specifically to make them enticing to ants, like juicy nectar for the insects to eat and hollow thorns for them to take shelter in. In exchange, plants use ants to spread their seeds and even act as bodyguards. A new study in the Proceedings of the National Academy of Sciences breaks down the genetic history of 1,700 species of ants and 10,000 plant genera, and the researchers found that the long history of ant and plant co-evolution started with ants foraging on plants and plants later responding by evolving ant-friendly traits.
	Development of a humanoid robot prototype, HRP-5P, capable of heavy labor Researchers have developed a humanoid robot prototype, HRP-5P, intended to autonomously perform heavy labor or work in hazardous environments.
	Climate change damaging male fertility Climate change could pose a threat to male fertility—according to new research from the University of East Anglia.
	Ancient Egyptians discovered Algol's variability 3,000 years before western astronomers An ancient Egyptian papyrus, known as the Cairo Calendar, could be the oldest historical record of a star's brightness, providing a new perspective on the development of the Algol triple star system over thousands of years.
	Gravitational waves from a merged hyper-massive neutron star For the first time astronomers have detected gravitational waves from a merged, hyper-massive neutron star. The scientists, Maurice van Putten of Sejong University in South Korea, and Massimo della Valle of the Osservatorio Astronomico de Capodimonte in Italy, publish their results in Monthly Notices of the Royal Astronomical Society: Letters.
	Tiny raptor tracks lead to big discovery Tracks made by dinosaurs the size of sparrows have been discovered in South Korea by an international team of palaeontologists.
	Home DNA tests doom anonymity for sperm, egg donors All Ryan Kramer had to do was to swab his cheek and embark on nine days of geneological research to identify his biological father, a man who thought he would remain anonymous when he donated his sperm and never took a DNA test himself.

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