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Updated: 2 hours 7 min ago

3D-Printed Alloys Could Lead to Lighter Planes

24 min 48 sec ago
Steven Ashley, NewScientist
A new process for 3D-printing things could pave the way for lighter, faster aircraft that potentially fly further on the same amount of fuel.Today's aeroplanes are held together with thousands of metal rivets and fasteners. That's because the lightweight but strong aluminium alloys used for their frames are considered unweldable. Try to weld them and you get a phenomenon called hot-cracking, in which the finished alloy weakens and fractures as it cools.
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Is the Hyperloop Too Big to Fail?

25 min 41 sec ago
Andrew Hawkins, The Verge
Today, Hyperloop One announced it raised an additional $85 million in financing, bringing its total haul to $245 million and a likely valuation of more than $700 million. That's a lot of scratch for a transportation startup with no commercial product, no revenue stream, no government approval, and no proof that its ultrafast transit system would even be safe for human passengers. Nonetheless, the company has managed to convince a variety of wealthy backers and governments to buy into their fantastical dream of moving people and packages through airless tubes at near-supersonic speeds.
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Collider Serves Up Drop of Primordial Soup

25 min 57 sec ago
Edwin Cartlidge, Physics World
A tiny drop of an exotic ultra-hot "soup" that permeated the universe for an instant immediately after the Big Bang appears to have been created in collisions between gold nuclei and deuterons at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Lab in the US. Evidence that a quarkgluon plasma (QGP) may be generated even in collisions involving very light nuclei such as the deuteron first emerged five years ago from data at the Large Hadron Collider in Geneva. But the new RHIC results push this evidence to record-low collision energies, which should help physicists better...
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What if There's a Traffic Accident on the Moon?

26 min 24 sec ago
Rebecca Hersher, NPR
When Alexia Boggs was applying to law school, she initially considered all the big specialties, but none of them seemed quite right."I was looking for a field of law where none of my family could ever seek my help," she says, sarcastic but also not really joking.She found what she was looking for in space law, and enrolled at the University of Mississippi School of Law, one of the two big space and aeronautical law programs in the U.S.
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Proton Experiment Reveals Scattering Mystery

26 min 39 sec ago
Kendra Redmond, Phys Central
Results from an experiment exploring how atoms interact on a very fundamental level show that scientists may understand less about what's going on in some atomic scattering experiments than previously thought. Published recently in the American Physical Society's journal Physical Review Letters, the international team of researchers hopes that this work will spark follow-up studies that could help us better address one of the most fundamental unsolved problems in physics.
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'Super Malaria' Spreading in South East Asia

28 min 35 sec ago
James Gallagher, BBC News
The rapid spread of "super malaria" in South East Asia is an alarming global threat, scientists are warning.This dangerous form of the malaria parasite cannot be killed with the main anti-malaria drugs.It emerged in Cambodia but has since spread through parts of Thailand, Laos and has arrived in southern Vietnam.
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Analysis Puts New Date on Earth's Continental Crust

28 min 50 sec ago
Tim Wogan, C-World
The Earth's crust hasn't changed much over the past 3.5 billion years, say researchers who have analysed the ratio of two titanium isotopes in ancient shales. Their findings suggest that plate tectonics started much earlier than most previous models suggest.Geologists divide Earth's crust into two broad classes of rock. Mafic rock, which makes up the ocean floor, is dense, dark and rich in minerals such as magnesium and iron. Continents comprise felsic rocks such as granite, which are lighter and richer in silicon and aluminium.
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Do Anti-GMO Activists Have an Eating Disorder?

29 min 14 sec ago
David Warmflash, GLP
The idea that strict devotion to eating pure can be a feature of mental illness, or even a specific psychiatric diagnosis, has made the news several times. Coined by Steve Bratman in 1997, the term orthorexia nervosa (ON) refers to a preoccupation with eating foods perceived to be healthy, and avoiding foods perceived to be unhealthy, to a psychopathological extreme.
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Violation to Einstein's Relativity Gets Resolved

29 min 29 sec ago
Ryan Mandelbaum, Gizmodo
Even if you don't know much physics, you probably know one of its core tenets: an object at rest stays at rest, and an object in motion stays in motion. In fact, in a vacuum where there's literally nothing to slow things down, things don't prefer being at rest or in motion. This plays out in real life all the timewhen you're sitting in the bathroom on a plane, for instance, you can't feel that you're moving 500 miles an hour. You only feel the changes in your velocity via the bumps.
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Internet of Cells Has Biologists Buzzing

29 min 48 sec ago
Monya Baker, Nature News
Yukiko Yamashita thought she knew the fruit-fly testis inside out. But when she carried out a set of experiments on the organ five years ago, it ended up leaving her flummoxed.Her group had been studying how fruit flies maintain their sperm supply and had engineered certain cells involved in the process to produce specific sets of proteins. But instead of showing up in the engineered cells, some proteins seemed to have teleported to a different group of cells entirely.
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Five Ways India Changed the World With Math

30 min 28 sec ago
Christian Yates, Conversation
It should come as no surprise that the first recorded use of the number zero, recently discovered to be made as early as the 3rd or 4th century, happened in India. Mathematics on the Indian subcontinent has a rich history going back over 3,000 years and thrived for centuries before similar advances were made in Europe, with its influence meanwhile spreading to China and the Middle East.
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What Would an H-Bomb Do to the Ocean?

30 min 48 sec ago
Marina Koren, The Atlantic
The latest fiery exchange between the United States and North Korea has produced a new kind of threat. On Tuesday, during his speech at the United Nations, President Trump said his government would totally destroy North Korea if necessary to defend the United States or its allies. On Friday, Kim Jong Un responded, saying North Korea will consider with seriousness exercising of a corresponding, highest level of hard-line countermeasure in history.
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High Energy Cosmic Rays Come From Beyond Galaxy

22 September 2017 - 12:23am
Adrian Cho, Science

When it comes to the highest energy cosmic rayssubatomic particles raining in from spacethe sky is lopsided: More come from one direction than the other, according to a new study. And because most come from a direction that points away from our galaxy, the observation bolsters the idea that the cosmic rays originate far beyond the Milky Way. However, the result falls short of astrophysicists' goal of pinpointing the ultimate sources of such cosmic rays.
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Gravitational Waves May Oscillate Like Neutrinos

22 September 2017 - 12:23am
Lisa Zyga, PhysOrg.com
Using data from the first-ever gravitational waves detected last year, along with a theoretical analysis, physicists have shown that gravitational waves may oscillate between two different forms called "g" and "f"-type gravitational waves. The physicists explain that this phenomenon is analogous to the way that neutrinos oscillate between three distinct flavorselectron, muon, and tau. The oscillating gravitational waves arise in a modified theory of gravity called bimetric gravity, or "bigravity," and the physicists show that the oscillations may be detectable in future experiments.
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The Big Bang Wasn't the Beginning

22 September 2017 - 12:22am
Ethan Siegel, Forbes
The Universe began not with a whimper, but with a bang! At least, that's what you're commonly told: the Universe and everything in it came into existence at the moment of the Big Bang. Space, time, and all the matter and energy within began from a singular point, and then expanded and cooled, giving rise over billions of years to the atoms, stars, galaxies, and clusters of galaxies spread out across the billions of light years that make up our observable Universe.
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Advanced Life May Exist in a Form Beyond Matter

22 September 2017 - 12:22am
The Daily Galaxy
Astrophysicist Paul Davies at Arizona State University suggests that advanced technology might not even be made of matter. That it might have no fixed size or shape; have no well-defined boundaries. Is dynamical on all scales of space and time. Or, conversely, does not appear to do anything at all that we can discern. Does not consist of discrete, separate things; but rather it is a system, or a subtle higher-level correlation of things.
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Are We About to See a Black Hole?

22 September 2017 - 12:22am
Adam Frank, NPR
If there is one thing science is good for, it's going to extremes.A lot of science's history is just one story after another of people figuring out how to do something that, just a few years before, was thought to be impossible.The impossible was heavy on my mind last Wednesday as I found out just how close we were to seeing as in taking actual pictures of black holes.
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Five Traits That Define a Cat's Personality

27 August 2017 - 4:54pm
Ross Pomeroy, RCScience
Psychologists commonly utilize the five factor model to characterize human personality. Making up this model are the "Big Five" traits: openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism. The intermixing dance of these five traits forms your personality, at least in the eyes of some psychologists.Now, a team of researchers primarily based out of the University of South Australia has created a similar personality index for cats.
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GMOs and Organic Don't Need to Be at War

27 August 2017 - 4:53pm
Andrew Porterfield, Genetic Lit Proj
In 2010, the U.S. National Research Council issued the first comprehensive overview of how well genetic modification had improved agricultural output. The report cited a list of benefits, which included the ability of farmers to reduce overall pesticide use, and use less harmful chemicals. Since farms started adopting genetic engineering technologies around 1996, they also had experienced lower production costs, and higher yields compared to conventional farming.
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Why Men Don't Believe the Data on Gender Bias

27 August 2017 - 4:53pm
Alison Coil, Wired
Earlier this summer Google engineer James Damore posted a treatise about gender differences on an internal company message board and was subsequently fired. The memo ignited a firestorm of debate about sex discrimination in Silicon Valley; this followed months of reporting on accusations of harassment at Uber and elsewhere. Sex discrimination and harassment in tech, and in science more broadly, is a major reason why women leave the field.
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