All posts tagged: scientists

Did scientists just confirm the horseshoe theory of politics? Extremism fuels protest across ideological lines

Did scientists just confirm the horseshoe theory of politics? Extremism fuels protest across ideological lines

People are more likely to take part in protests and other forms of collective action when the cause aligns with their political values. However, new research suggests that political extremism itself—regardless of ideology—also drives activism. A study published in Political Psychology found that individuals with extreme political beliefs, whether on the left or the right, are more likely to engage in collective action, even if the movement does not align with their ideology. The findings suggest that emotions, particularly anger, play a central role in this relationship. “Both societal and fundamental interests inspired this research. At the societal level, there is a longstanding debate about the role of political extremes in social movements. In France, this question became particularly salient during the Yellow Vest movement, with analysts attempting to categorize the movement as left-wing, right-wing, or simply extreme,” explained Gaëlle Marinthe, an associate professor at Clermont Auvergne University. “On the fundamental side, I am deeply interested in the similarities and differences between groups with ideologically opposing viewpoints. My colleagues and I wanted to examine the …

Scientists Say: Dark lightning

Scientists Say: Dark lightning

atmosphere: The envelope of gases surrounding Earth, another planet or a moon. atom: The basic unit of a chemical element. Atoms are made up of a dense nucleus that contains positively charged protons and uncharged neutrons. The nucleus is orbited by a cloud of negatively charged electrons. cloud: A plume of molecules or particles, such as water droplets, that move under the action of an outside force, such as wind, radiation or water currents. (in atmospheric science) A mass of airborne water droplets and ice crystals that travel as a plume, usually high in Earth’s atmosphere. Its movement is driven by winds. electricity: A flow of charge, usually from the movement of negatively charged particles, called electrons. electron: A negatively charged particle, usually found orbiting the outer regions of an atom; also, the carrier of electricity within solids. field: An area of study, as in: Her field of research is biology. Also a term to describe a real-world environment in which some research is conducted, such as at sea, in a forest, on a mountaintop or on …

If You Blazed Massive Amounts of Weed as a Youth, Scientists Have Interesting News

If You Blazed Massive Amounts of Weed as a Youth, Scientists Have Interesting News

There’s no brain fog here. When most smokers light up a joint, it’s unlikely that “enhanced cognitive ability” is front-of-mind. Not shockingly, the long-held assumption from most tends to be that weed makes you dumb, and probably fries your brain permanently. Intriguingly, that argument might be going up in smoke. A recent study by researchers in — where else — Amsterdam appears to be good news for all you former teenage tokers out there, finding that the age at which men start smoking has no negative bearing on cognitive decline later in life. Adult stoners can also breathe a little easier from now on, as the research also found that those who use cannabis frequently as an adult show no greater cognitive decline in the long term than those who don’t partake. The study canvassed 5,162 men born between 1949 and 1961, who were sorted into two groups based on whether they had a history of using marijuana. From there, the participants who smoked were sorted into age groups based on when they started sparking up. One weakness of the study …

For the first time ever, scientists convert light into a supersolid

For the first time ever, scientists convert light into a supersolid

Scientists have achieved a breakthrough in quantum physics, successfully creating a supersolid state using light for the first time. This achievement, led by researchers at CNR Nanotec in Italy, opens new avenues for studying an exotic phase of matter that combines the properties of both solids and superfluids. Until now, supersolids had only been observed in ultracold atomic gases, but this research demonstrates that the phenomenon can also occur in photonic systems. The Unique Nature of Supersolids Most matter exists in one of four familiar states: solid, liquid, gas, or plasma. However, at temperatures near absolute zero, quantum mechanics introduces new and unusual phases of matter. One of these is the supersolid—a state that retains the structured, rigid properties of a solid while also flowing without friction like a superfluid. This paradoxical state was theorized in the 1960s but remained elusive until the first experimental confirmations in 2017 using ultracold atomic gases. The mechanism that leads to the formation of the supersolid. Linear and nonlinear scattering processes combine and give rise to a density modulation …

Under Trump, AI Scientists Are Told to Remove ‘Ideological Bias’ From Powerful Models

Under Trump, AI Scientists Are Told to Remove ‘Ideological Bias’ From Powerful Models

The National Institute of Standards and Technology (NIST) has issued new instructions to scientists that partner with the US Artificial Intelligence Safety Institute (AISI) that eliminate mention of “AI safety,” “responsible AI,” and “AI fairness” in the skills it expects of members and introduces a request to prioritize “reducing ideological bias, to enable human flourishing and economic competitiveness.” The information comes as part of an updated cooperative research and development agreement for AI Safety Institute consortium members, sent in early March. Previously, that agreement encouraged researchers to contribute technical work that could help identify and fix discriminatory model behavior related to gender, race, age, or wealth inequality. Such biases are hugely important because they can directly affect end users and disproportionately harm minorities and economically disadvantaged groups. The new agreement removes mention of developing tools “for authenticating content and tracking its provenance” as well as “labeling synthetic content,” signaling less interest in tracking misinformation and deep fakes. It also adds emphasis on putting America first, asking one working group to develop testing tools “to expand …

Global first: Scientists confirm the existence of quantum tornadoes

Global first: Scientists confirm the existence of quantum tornadoes

Physicists have uncovered a new quantum phenomenon, proving for the first time that electrons can form vortex-like structures in momentum space. This breakthrough, led by researchers at the Universities of Würzburg and Dresden, sheds light on how electrons behave in topological semimetals and may pave the way for energy-efficient quantum technologies. Mapping Quantum Tornadoes in Momentum Space Understanding how electrons move in materials is central to modern physics. Traditional research focuses on position space, where familiar vortex structures appear in fluids, superfluids, and superconductors. Sketch of the TaAs Brillouin zone with a symmetry-enforced almost movable WNL, denoted in green. (CREDIT: Physical Review X) However, momentum space—which describes electron behavior in terms of energy and movement direction—has remained largely unexplored for such phenomena. Scientists have long theorized that electrons could form vortex-like patterns in momentum space, but until now, experimental confirmation was missing. Using soft x-ray angle-resolved photoelectron spectroscopy (SX-ARPES), researchers mapped the three-dimensional momentum space of tantalum arsenide (TaAs), a quantum semimetal known for hosting exotic electronic states. Their findings, published in the journal Physical …

Scientists find alarming “storm in your brain” caused by air pollution

Scientists find alarming “storm in your brain” caused by air pollution

Breathing polluted air, whether from city smog or wildfire smoke, is known to harm the lungs and heart. Now, new research sheds light on how these airborne toxins negatively impact the brain, potentially contributing to conditions like Alzheimer’s disease and autism. Scientists have discovered a process by which harmful substances can disrupt the normal function of brain cells, hindering their ability to connect and communicate, ultimately leading to cell damage. Their findings have been published in Proceedings of the National Academy of Sciences. Previous research had already established a link between air pollution and conditions like asthma and heart disease. Epidemiological studies, which look at patterns of disease in populations, had also suggested that exposure to air pollution could increase the risk of developing brain conditions such as Alzheimer’s disease and autism. However, the precise biological mechanisms behind this connection remained unclear. Scientists wanted to understand exactly how breathing in polluted air could translate into harm within the brain. They aimed to uncover the specific chemical reactions that might be involved in this process, hoping …

Scientists Say: Caecilian

Scientists Say: Caecilian

amphibians: A group of animals that includes frogs, salamanders and caecilians. Amphibians have backbones and can breathe through their skin. Unlike reptiles, birds and mammals, unborn or unhatched amphibians do not develop in a special protective sac called an amniotic sac. aquatic: An adjective that refers to water. caecilian: A type of amphibian that has no legs. Caecilians have ring-shaped folds of skin called annuli, small eyes covered by skin and sometimes bone, and a pair of tentacles. Most of them live underground in the soil, but some spend their entire lives in water. carnivore: An animal that either exclusively or primarily eats other animals. chemical: A substance formed from two or more atoms that unite (bond) in a fixed proportion and structure. For example, water is a chemical made when two hydrogen atoms bond to one oxygen atom. Its chemical formula is H2O. Chemical also can be an adjective to describe properties of materials that are the result of various reactions between different compounds. diffuse: adj.) To be spread out thinly over a great …

Scientists Intrigued by Galactic Structure That’s 1.4 Billion Light-Years Wide

Scientists Intrigued by Galactic Structure That’s 1.4 Billion Light-Years Wide

Scientists say they’ve uncovered the “largest known galactic structure” — a cosmic monster that spans a mind-boggling 1.4 billion light-years, which is around 14,000 times the diameter of our own Milky Way galaxy. The team, led by scientists from the Max Planck Institute for Physics, made the discovery after analyzing data as part of the ROSAT X-ray satellite sky survey. They found that the structure — dubbed “Quipu” after strings with knots used by the Incas for bookkeeping — stretched across huge swathes of the night sky. The team believes it’s largely composed of dark matter, the invisible substance believed to account for 85 percent of all mass in the universe. The finding could have considerable implications for our understanding of the larger structures lurking in the universe and how to accurately map them. “If you look at the distribution of the galaxy clusters in the sky in a spherical shell with a distance of 416 to 826 million light-years, you immediately notice a huge structure that stretches from high northern latitudes to almost the southern …

Scientists use common economic theory to save endangered habitats

Scientists use common economic theory to save endangered habitats

Puerto Rico’s coastal wetlands face mounting challenges, many of which threaten the delicate balance of these ecosystems and their resident species. Among the most vulnerable is the coquí llanero, Puerto Rico’s smallest tree frog, which relies on the island’s dwindling freshwater wetlands. With its entire known population confined to three small marshes on the northern coast, the coquí llanero has become a symbol of the fragility of Puerto Rico’s natural resources. Human activity has significantly altered Puerto Rico’s coastal wetlands since the 1500s. Agriculture and, more recently, urbanization have reshaped the landscape. These wetlands are largely sustained by aquifers from the adjacent karst region, which extend the hydroperiod, favoring marsh habitats over forested wetlands. Vegetation here includes grasses, rushes, and intermittent stands of Pterocarpus officinalis. This vegetation supports species like the bulltongue arrowhead, a critical substrate for the reproduction of the coquí llanero. The island of Puerto Rico depicting the current distribution of coastal wetlands and the extent of the island’s karst geology. Outlined in red are the arbitrary boundaries representing the three currently known …