176 articles from FRIDAY 31.7.2020

The need for progressive national narratives

The recent rise of authoritarian nationalist movements has reinforced the tendency of many on the left, and some on the right, to reject all forms of nationalism, writes Rogers M. Smith in "Toward Progressive Narratives of American Identity," published in Polity's May Symposium on the Challenges Facing Democrats.

A rebranding of 'freedom'?

According to recent Gallup polls, socialism is now more popular than capitalism among Democrats and young people, and support for "some form of socialism" among all Americans is at 43% (compared to 25% in 1942). Policies that went unmentioned or were declared out-of-bounds in elections four years ago—a federal jobs guarantee, single-payer health care, free college, massive tax hikes on the rich,...

Going viral: five of the most important things we’ve learnt about Covid-19 so far | Hassan Vally

The past few weeks in Victoria highlight how quickly things can turn. We have a long way to go Even though it’s been only six months since we first heard about a novel coronavirus circulating in China, so much has happened that it’s all a bit of a blur. What we do know is that we have a long way to go and there are many challenges that lie ahead of us. Although many countries have managed to...

When Dirac meets frustrated magnetism

Scientists have discovered one of the largest anomalous Hall effects (15,506 siemens per centimeter at 2 Kelvin) ever observed in the new compound, KV3Sb5. This material has a never-before-seen combination of properties: Dirac physics, frustrated magnetism, 2D exfoliatability, and chemical stability. Aside from future fundamental research studying the interplay of these ingredients, the unique...

Physicists find misaligned carbon sheets yield unparalleled properties

A material composed of two one-atom-thick layers of carbon has grabbed the attention of physicists worldwide for its intriguing -- and potentially exploitable -- conductive properties. University of Texas at Dallas physicists are studying how the ability of twisted bilayer graphene to conduct electrical current changes in response to mid-infrared light.

When Dirac meets frustrated magnetism

The fields of condensed matter physics and materials science are intimately linked because new physics is often discovered in materials with special arrangements of atoms. Crystals, which have repeating units of atoms in space, can have special patterns which result in exotic physical properties. Particularly exciting are materials which host multiple types of exotic properties because they give...

NASA sun data helps new model predict big solar flares

Scientists have developed a new model that successfully predicted seven of the Sun's biggest flares from the last solar cycle, out of a set of nine. With more development, the model could be used to one day inform forecasts of these intense bursts of solar radiation.

'Little brain' or cerebellum not so little after all

When we say someone has a quick mind, it may be in part thanks to our expanded cerebellum that distinguishes human brains from those of macaque monkeys, for example. High-res imaging shows the cerebellum is 80% of the area of the cortex, indicating it has grown as human behavior and cognition evolved.

NASA's Webb Telescope will study Jupiter, its rings, and two intriguing moons

Jupiter, named for the king of the ancient Roman gods, commands its own mini-version of our solar system of circling satellites; their movements convinced Galileo Galilei that Earth is not the center of the universe in the early 17th century. More than 400 years later, astronomers will use NASA's James Webb Space Telescope to observe these famous subjects, pushing the observatory's instruments to...

Delay to easing English lockdown may not be enough, experts say

Scientists suggest move may stabilise infections, but stricter rules needed to reduce ratesCoronavirus – latest updatesSee all our coronavirus coverageApplying a handbrake to lockdown easing in England is welcome, but may not be enough to stop a rise in infections, experts have said.Sage, the government’s scientific advisory group, said on Friday that it did not have confidence that the...

NASA Sun Data Helps New Model Predict Big Solar Flares

Portal origin URL: NASA Sun Data Helps New Model Predict Big Solar FlaresPortal origin nid: 463252Published: Friday, July 31, 2020 - 11:36Featured (stick to top of list): noPortal text teaser: Using data from NASA’s Solar Dynamics Observatory, or SDO, scientists have developed a new model that successfully predicted seven of the Sun’s biggest flares from the last solar...