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Geoengineering will not save humankind from climate change

arstechnica.com Unknown 2025-10-04 13:24:40

A team of the world’s best ice and climate researchers studied a handful of recently publicized engineering concepts for protecting Earth’s polar ice caps and found that none of them are likely to work. Their peer-reviewed research, published Tuesday, shows some of the untested ideas, such as dispersing particles in the atmosphere to dim sunlight or trying to refreeze ice sheets with pumped water, could have unintended and dangerous consequences. The various speculative notions that have been

Topics: based ice paper particles water

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Glow-in-the-dark houseplants shine in rainbow of colours

news.ycombinator.com Bourzac 2025-10-10 03:34:36

University students might soon have something other than black-light posters to brighten their dorm rooms. Researchers have created glow-in-the-dark plants by injecting succulents with materials similar to those that make the posters light up. The fleshy plants shine as brightly as a night light, and can be made to do so in a wide variety of colours — a first for glowing houseplants, according to the team. Glow way! Bioluminescent houseplant hits US market for first time The researchers, led b

Topics: glow light particles plants researchers

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New York’s ‘Big Bang Machine’ Passes Critical First Test

gizmodo.com Gayoung Lee 2025-10-13 09:15:20

sPHENIX is a next-generation particle detector that probes the mysterious, soupy form of the early universe. We know very little about the first few microseconds after the Big Bang. We have theories, most of which we’re still double- and triple-checking to see if they actually make scientific sense. The research process can seem tedious at times, but a newcomer from Long Island offers promising advances in our quest to understand how our universe came to be. In a recent paper for the Journal o

Topics: detector energy particles qgp sphenix

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Infamous ‘Erin Brockovich’ Toxin Polluted Air for Months After LA Fires

gizmodo.com Ellyn Lapointe 2025-10-20 16:00:29

The January wildfires left many scars on the city of Los Angeles, from rubble-reduced homes to torched abandoned vehicles. Though cleanup crews quickly cleared much of the debris, one alarming invisible impact lingered over the city for months, a new study suggests. In late March—more than two months after the flames died out—researchers detected levels of carcinogenic hexavalent chromium (a.k.a. chromium-6) 200 times greater than baseline levels for LA air. If this pollutant sounds familiar, y

Topics: chromium hexavalent kleeman levels particles

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Glow-in-the-Dark Succulents Could Be the Future of Ambient Lighting

gizmodo.com Gayoung Lee 2025-10-24 13:00:17

Glowing plants are pleasant to look at. Turns out, a simple method for loading glow-in-the-dark particles onto succulent leaves can make these plants prettier—and more useful. In a Matter paper published today, researchers showcase glow-in-the-dark succulents—popular plant buddies—that recharge using sunlight. For years, scientists and engineers have dreamed of harnessing glowing greenery for sustainable lighting, but most attempts, typically through genetic engineering, have achieved limited s

Topics: glow liu particles plant succulents

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Junior Peña, neutrino hunter

technologyreview.com Jessica Chomik-Morales 2025-10-25 16:00:00

After his independent study helped Peña pass AP calculus as a junior, his fascination with physics led him to the University of Southern California, the 2019 session of MIT’s Summer Research Program, and then MIT for grad school. Today, he’s working to shed light on neutrinos, the ghostly uncharged particles that slip effortlessly through matter. Particles that would require a wall of lead five light-years thick to stop. As a grad student in the lab of Joseph Formaggio, an experimental physicis

Topics: cavity energy mass particles peña

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A Physicist Wants to Turn Jupiter’s Largest Moon Into a Gigantic Dark Matter Detector

gizmodo.com Gayoung Lee 2025-10-29 13:00:14

When searching for the unknown, classic physics wisdom holds that a bigger detector boosts the chances of discovery. A physicist is taking that advice to heart, advancing a bold plan to use none other than Ganymede—Jupiter’s largest moon—as a dark matter detector on an astronomical scale. Dark matter refers to the “invisible” mass that supposedly constitutes 85% of the universe. There’s considerable evidence that dark matter exists, but it’s “dark,” meaning it doesn’t respond to light and very

Topics: dark evidence ganymede matter particles

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Lightning declines over shipping lanes following regulation of sulfur emissions

news.ycombinator.com Chris Wright 2025-10-25 09:35:49

If you look at a map of lightning near the Port of Singapore, you’ll notice an odd streak of intense lightning activity right over the busiest shipping lane in the world. As it turns out, the lightning really is responding to the ships, or rather the tiny particles they emit. Using data from a global lightning detection network, my colleagues and I have been studying how exhaust plumes from ships are associated with an increase in the frequency of lightning. For decades, ship emissions steadil

Topics: cloud emissions ice lightning particles

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Efforts to Ground Physics in Math Are Opening the Secrets of Time

wired.com Leila Sloman 2025-12-08 08:00:00

Now, three mathematicians have finally provided such a result. Their work not only represents a major advance in Hilbert’s program, but also taps into questions about the irreversible nature of time. “It’s a beautiful work,” said Gregory Falkovich, a physicist at the Weizmann Institute of Science. “A tour de force.” Under the Mesoscope Consider a gas whose particles are very spread out. There are many ways a physicist might model it. At a microscopic level, the gas is composed of individual

Topics: boltzmann gas mathematicians model particles

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One of the Biggest Sources of Microplastics Will Make You Mad as Hell

futurism.com Unknown 2025-12-08 05:00:15

Microplastics are so pervasive that they're now found in our bloodstreams, bones, and — according to one alarming study — even our brains in enough quantities to make a plastic spoon. But where do they all come from? One of the biggest sources may surprise you: car tires. Or maybe it isn't that surprising, now that we've brought it up. Yet, the role of civilization's addiction to the automobile tends to go overlooked in these discussions in favor of more obvious forms of waste like plastic bot

Topics: microplastics particles tire tires wear

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There could be “dark main sequence” stars at the galactic center

arstechnica.com Unknown 2026-01-12 23:30:58

For a star, its initial mass is everything. It determines how quickly it burns through its hydrogen and how it will evolve once it starts fusing heavier elements. It's so well understood that scientists have devised a "main sequence" that acts a bit like a periodic table for stars, correlating their mass and age with their properties. The main sequence, however, is based on an assumption that's almost always true: All of the energy involved comes from the gravity-driven fusion of lighter elemen

Topics: dark energy galaxy matter particles

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Scientists Discover Secret Weapon That Allows Pythons to Digest Bones

gizmodo.com Ellyn Lapointe 2026-01-26 15:00:40

Pythons are notorious for their eating habits. After suffocating their prey with their lithe bodies, these large snakes swallow the animal whole. Now, researchers have shed new light on the cellular mechanisms that allow them to digest entire skeletons. The study, presented July 9 at the Society for Experimental Biology Annual Conference in Belgium and published in the Journal of Experimental Biology, investigated the intestinal cells of Burmese pythons. Adult males can grow to be 10 to 16 feet

Topics: calcium cells particles pythons snakes

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Particle Lenia Deluxe Edition

news.ycombinator.com Unknown 2026-01-23 18:08:36

Particle Lenia Deluxe Edition. Lenia is a family of cellular automata that produces lifelike behaviors and patterns, first described in the seminal paper by Bert Wang-Chak Chan. This project is heavily inspired by the original Particle Lenia research by Alexander Mordvintsev et al., which implemented a particle-based version of Lenia in Python and JAX. Recognizing the importance of scale (number of particles) for simulation dynamics and iteration times for rapid pattern exploration, I ported th

Topics: energy field kernels lenia particle

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Cancer-targeting nanoparticles are moving closer to human trials

technologyreview.com Anne Trafton 2026-02-23 08:00:00

In the original production technique, layers with different properties can be laid down by alternately exposing a particle to positively and negatively charged polymers, with extensive purification to remove excess polymer after each application. Each layer can carry therapeutics as well as molecules that help the particles find and enter cancer cells. But the process is time-consuming and would be difficult to scale up. In the new work, the researchers used a microfluidic mixing device that al

Topics: cancer layer nanoparticles researchers technique

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Verlet Integration and Cloth Physics Simulation (2022)

news.ycombinator.com Unknown 2026-02-25 09:39:26

Physics simulation in games (or simply game physics) is a vast topic, and in this post we'll cover only a tiny part of it; yet certainly an interesting one! Let's understand what Verlet integration is by implementing a simple 2D cloth simulation with C++. Physics in games is always fun, isn't it? Have you ever ditched the main quest of a level just to blow something up? I know I have. But even more fun than watching objects bounce around the screen is to understand how we can use simple concep

Topics: function integration let mouse particle

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You'll Be Flabbergasted to Learn Which Contains More Microplastics: Plastic Bottles or Glass Bottles

futurism.com Unknown 2026-02-27 23:15:35

You'll Be Flabbergasted to Learn Which Contains More Microplastics: Plastic Bottles or Glass Bottles "We expected the opposite result." Bottom of the Bottle French government scientists have discovered something startling about the microplastic content in glass and plastic bottles. As the Agence France-Presse reports, scientists at the country's food safety regulator found that glass-bottled drinks contained about 100 microplastic particles per liter, which amounts to roughly 25 particles pe

Topics: bottles glass microplastic particles plastic

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Drinks in glass bottles contain more microplastics than those in other container

news.ycombinator.com Unknown 2026-02-28 03:01:34

The aim of the ANSES study was to determine the level of microplastic contamination in drinks such as water, soda, iced tea, wine and beer; it also sought to establish the impact of their containers on this level. For most of the drinks studied, the level of microplastics was found to be higher in glass bottles than in other containers. For example, on average, in glass bottles of cola, lemonade, iced tea and beer, there were around 100 microplastic particles per litre. This number was five to 5

Topics: bottles caps drinks microplastics particles

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An analysis of recent multithreading improvements for a smoother game

news.ycombinator.com Unknown 2026-02-25 14:56:40

UNIT: Dedmen, Programmer, Programming TO: Arma 3 Users OPSUM: An analysis of recent multithreading improvements for a smoother game experience SITREP Welcome to this technical deep dive into Arma 3's performance optimizations in update 2.20. Before handing you over to this blog's actual author, I wanted to share a few words on the state of Live Ops. Yes, REPception is now a thing. Some 12 years since its initial release, we still find ourselves releasing free platform updates to the game. T

Topics: game parallel particles run simulation

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Scientists Discover Bizarre Signals Coming From Ice in Antarctica

futurism.com Unknown 2026-03-12 19:15:42

Some strange radio signals are broadcasting out of Antarctic ice, and the researchers who found them don't know why. Using a cosmic particle detector, researchers at the University of Pennsylvania detected peculiar signals that, according to a press release, "defy the current understanding of particle physics." The particle detector that found those strange signals — which is, charmingly, suspended from a bunch of balloons — belongs to a range of instruments known as the Antarctic Impulsive Tr

Topics: anita don neutrinos particle wissel

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Scented products cause indoor air pollution on par with car exhaust

news.ycombinator.com Patra Et Al. 2025-11-10 09:53:28

Using scented products indoors changes the chemistry of the air, producing as much air pollution as car exhaust does outside, according to a new study. Researchers say that breathing in these nanosized particles could have serious health implications. When you hear or see the words ‘air pollution,’ you most likely think of things like factories and car exhaust. That’s pollution that is out there – outside your house. But have you thought about how you’re contributing to air pollution inside of

Topics: air indoor particles scented wax

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Latest Tech News

Geoengineering will not save humankind from climate change

Glow-in-the-dark houseplants shine in rainbow of colours

New York’s ‘Big Bang Machine’ Passes Critical First Test

Infamous ‘Erin Brockovich’ Toxin Polluted Air for Months After LA Fires

Glow-in-the-Dark Succulents Could Be the Future of Ambient Lighting

Junior Peña, neutrino hunter

A Physicist Wants to Turn Jupiter’s Largest Moon Into a Gigantic Dark Matter Detector

Lightning declines over shipping lanes following regulation of sulfur emissions

Efforts to Ground Physics in Math Are Opening the Secrets of Time

One of the Biggest Sources of Microplastics Will Make You Mad as Hell

There could be “dark main sequence” stars at the galactic center

Scientists Discover Secret Weapon That Allows Pythons to Digest Bones

Particle Lenia Deluxe Edition

Cancer-targeting nanoparticles are moving closer to human trials

Verlet Integration and Cloth Physics Simulation (2022)

You'll Be Flabbergasted to Learn Which Contains More Microplastics: Plastic Bottles or Glass Bottles

Drinks in glass bottles contain more microplastics than those in other container

An analysis of recent multithreading improvements for a smoother game

Scientists Discover Bizarre Signals Coming From Ice in Antarctica

Scented products cause indoor air pollution on par with car exhaust

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