fidzu : geek

An anonymous reader quotes a report from Scientific American: Microplastics are a source of extreme concern for health: the presence of these tiny pieces of plastic has been linked to heart attacks, stroke, dementia and brain tumors. But what drives these associations is unclear. Now a study published in Nature offers a tantalizing clue: microplastics interact with water, generating highly reactive molecules. When microplastics come into contact with water, the water near their surface can become chemically active, generating highly reactive species that can modify nearby substances, including biologically important molecules. As plastics wear down to microscopic sizes, their surface-to-volume ratio increases dramatically. For example, when a credit card is fragmented into particles some 10 microns in diameter, there is a more than 200-fold increase in its surface area, says Wei Min, a chemist at Columbia University and one of the senior authors of the study. As a result, any chemical activity is amplified. Min and his colleagues examined various microplastics -- including polystyrene, polyethylene, polyvinyl chloride, polypropylene and polyethylene terephthalate. Plastic surfaces are hydrophobic, meaning they repel water, Min says. Thus, water molecules cannot form the hydrogen bonds they maintain in liquid form. That changes molecular arrangements, and, in turn, the change influences the local electrical environment and chemical reactivity. The presumed chemical inertness of bulk plastics overlooks the toxicity of their fragmented microscale forms. "For microplastics, this is especially important because fragmentation creates enormous amounts of new surface area," Min says. In past research, microplastics have been shown to cause inflammation, oxidative stress and decreased mitochondrial activity. The new study provides a possible mechanism for this, showing that plastic-water interfaces can perturb proteins, cell membranes, and more. How this might contribute to damage in living tissues in humans is still unclear, Min says. "Ultimately, we hope to connect fundamental interfacial chemistry with quantitative measurements of biological effects, which would help us better understand potential health risks," he adds.

Read more of this story at Slashdot.

17 Oct 2026 3:00pm GMT

Research suggests listening more while talking less. Killing aimless meetings can help, too.

17 Oct 2026 11:15am GMT

The single-player is just OK, but according to the players, that doesn't matter.

17 Oct 2026 11:00am GMT

Google is expanding its Android Earthquake Alerts System from 98 to more than 200 regions worldwide, using smartphone sensors to detect early earthquake activity and warn users before potentially dangerous shaking begins. The update also enhances the system's "Be Ready" alerts with estimated earthquake magnitudes, epicenter information, maps showing affected areas, and additional safety guidance. From a Google blog post: Be Aware: A straightforward alert for estimated light shaking, letting you know an earthquake has been detected nearby. Be Ready: A detailed alert for stronger shaking, alerting you to prepare to take action. Take Action: A full-screen alert for moderate to heavy shaking, giving you immediate advice on how to stay safe. We've built-out our Be Ready alert with new helpful guidance. In the coming months, you'll see a map with a radius of where we've detected shaking, estimated earthquake magnitude, action you can take, and a button to learn more about the earthquake as information comes in.

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17 Oct 2026 11:00am GMT

Astronomers have identified what may be the first genuinely green star, a white dwarf called WD J1330+6435 located about 326 light-years from Earth. Space.com reports: The researchers found that some dead star white dwarfs can go a little green around the gills after snacking on orbiting planets. An example of this is WD J1330+6435, a cool white dwarf located around 326 light-years away, which has been accreting rocky material from a planetary companion. This has enriched its atmosphere with calcium, lithium, and sodium, and the team's model suggests this would have led WD J1330+6435 to adopt a green hue. [...] The researchers think that no other star, living or dead, has ever been credibly reported as green. That makes WD J1330+6435 the first known genuinely green star. "The traces of sodium in the atmosphere of this white dwarf absorb the orange part of the spectrum, leaving behind a ghostly green glow," Hollands said. "Imagine standing on a planet and looking up at a green star. It feels like something out of science fiction." The researchers also discovered what may be the reddest star ever observed, the white dwarf WD J1011+2845, located just 48 light-years away. The findings have been published in the journal RAS Techniques and Instruments.

Read more of this story at Slashdot.

17 Oct 2026 7:00am GMT

It's been two years since my initial post about making GNOME OS an end-user general purpose OS. Today, we're excited to announce that we've hit a major milestone! TL;DR: We're launching a new edition called "GNOME OS Preview", which is built from the latest stable GNOME release. This means that GNOME OS is no longer just a nightly OS for GNOME developers and testers! ↫ Aaron Ardiri A number of changes and improvements have made the move from nightly status to preview status possible. They've made GNOME OS handle environments with limited amounts of RAM much better - not a luxury, these days - including the ability to dynamically increase the swap space if needed. In addition, the work to make it much easier to install and test daily Flatpak builds of applications is now part of GNOME OS, as is the effort to make command-line utilities manageable in the same way as Flatpaks. As the blog post notes, there's still a ton of work left to do before GNOME OS is ready for everyone. They're going to bet heavily on systemd-homed to enable, among other things, per-user disk encryption, and there's a new installer coming, as well. They also want to ship GNOME's preinstalled applications as Flatpaks, integrate delta updates, and much more. It all looks incredibly appealing, even if I am not the target user for something like GNOME OS.

16 Oct 2026 11:54pm GMT

The actions could have resulted in criminal charges had humans been behind the keyboard.

16 Oct 2026 8:59pm GMT

This repository contains approximately 1 GB of historical Palm OS development material, collected over many years of working with the platform. The archive includes a mixture of publicly distributed development resources, personal development material, technical references, and historical artifacts. ↫ Aaron Ardiri An incredible resource for anyone wishing to dive into Palm OS programming and development in this day and age.

16 Oct 2026 8:47pm GMT

OpenVMS isn't exactly the easiest platform to get into, with even the first major hurdle - licensing! - being a bit of a complex issue. To address this and other issues people new to OpenVMS might run into, VSI, the company currently developing OpenVMS, launched its new VSI How-to Portal. For now, it covers things like licensing, installing and updating OpenVMS for x86, TCP/IP configuration, and setting up SSH. The company plans to expand the portal with more articles based on customer and user feedback, so hopefully more information will appear soon. Most of us are probably not particularly not particularly experienced with OpenVMS, so having a portal like this can really help get you started.

15 Oct 2026 11:55pm GMT

This is a story of how we got from something like this: Failed to deserialize BUILDINFO file: Parser failed with the following error: unknown ^ invalid makepkg build environment option expected `buildflags`, `ccache`, `check`, `color`, `distcc`, `sign`, `makeflags` To this: When the ALPM project started, the goal was fairly simple: Better tooling to interact with the low-level plumbing of Arch Linux Package Management (ALPM). This meant binaries to read/write individual file types, better error messages, extensive specifications and of course exports to common dataformats like JSON. The thing is, although some of us already had experience with low-level dataframe parsing, …

08 Oct 2026 12:00am GMT

Over the last few weeks, we have been doing research on the integration of our official distribution packages when installed on a target system. In this context we have been looking at the current uses of alpm-install-scriptlet(5) files and alpm-hooks(5) in around 120 package source repositories (alpm-source-repo(7)) to better understand the underlying functionality and use-cases these two integrations offer and target. In this article we are going to look at how these two systems work, how Arch Linux is currently using them and attempt to provide suggestions for when to use which. Learning about alpm-hooks(5) and alpm-install-scriptlet(5) files …

09 Aug 2026 12:00am GMT

Good morning from JetBrains Berlin office!

01 Jun 2026 12:00am GMT