Become a fan of Slashdot on Facebook

 


Forgot your password?
Close
typodupeerror

Submission + - Scientists may have found dark matter after 100 years of searching (sciencedaily.com)

Submitted by alternative_right
alternative_right writes: A University of Tokyo researcher analyzing new data from NASA’s Fermi Gamma-ray Space Telescope has detected a halo of high-energy gamma rays that closely matches what theories predict should be released when dark matter particles collide and annihilate. The energy levels, intensity patterns, and shape of this glow align strikingly well with long-standing models of weakly interacting massive particles, making it one of the most compelling leads yet in the hunt for the universe’s invisible mass.

Submission + - 'Slop Evader' Lets You Surf the Web Like It's 2022 (404media.co)

Submitted by alternative_right
alternative_right writes: AI slop feels inescapable — whether you’re watching TV, reading the news, or trying to find a new apartment.

That is, unless you’re using Slop Evader, a new browser tool that filters your web searches to only include results from before November 30, 2022 — the day that ChatGPT was released to the public.

The tool is available for Firefox and Chrome, and has one simple function: Showing you the web as it was before the deluge of AI-generated garbage. It uses Google search functions to index popular websites and filter results based on publication date, a scorched earth approach that virtually guarantees your searches will be slop-free.

Submission + - Ion-based cooling technique could make computer chips more powerful (phys.org)

Submitted by alternative_right
alternative_right writes: [R]esearchers at The University of Osaka have developed a strategy to enhance cooling by driving the flow of ions through nanoscale channels. This ionothermoelectric strategy is analogous to the Peltier technique, in which passing an electric current through a material results in heating or cooling. This compelling invention is published in ACS Nano.

"We fabricated a nanosized pore in a semiconductor membrane and surrounded the nanopore with a 'gate,' in the form of a nanowire. Applying a voltage to the gate induced the flow of ions through the nanopore," explains lead author, Makusu Tsutsui. "Varying the voltage modulated the surface charge of the nanopore."

A negative applied voltage resulted in a negatively charged nanopore that was only permeable to positively charged ions, or cations. Consequently, each ion drags a certain quantity of heat along with its charge. The team created a concentration gradient in saltwater around the nanopore to drive cation transport in one direction, effectively pumping heat out of the nanopore. Reversing the applied voltage made the nanopore surface positive and permeable only to negative ions, or anions, therefore switching the system from cooling to heating.

Submission + - Are aliens real? Do aliens exist? Technosignatures may hold new clues (phys.org)

Submitted by alternative_right
alternative_right writes: Asked whether he believes aliens exist, Frank responds with a scientist's perspective:

He suggests microbial life may be common across the cosmos, but intelligent civilizations could be rare and short-lived. For scientists to find another civilization, he says, "we have to overlap with them in time." If technological civilizations last only a short time, the galaxy could lack technological civilizations at any given moment.

Submission + - An ancient planet smashed into Earth. We now know its origin (dw.com)

Submitted by alternative_right
alternative_right writes: Space scientists are largely agreed that about 4.5 billion years ago, Earth, then a hot ball of molten iron and other elements, was hit by another Mars-sized protoplanet. This hypothetical world is called Theia, named for a titaness of Greek mythology.

Theia was completely destroyed by this impact, but likely lives on beneath our feet, as fragments from this doomed world fused with the early Earth.

Submission + - What would a small black hole do to the human body? (phys.org)

Submitted by alternative_right
alternative_right writes: A supersonic shock wave forms when an object moves faster than the speed of sound, and it creates a powerful disturbance in the shape of a cone. When passing through a human body, a primordial black hole would generate these shock waves on its path, destroying human tissues along the way, similar to a bullet entering the body.

The black hole would also produce tidal gravitational forces, or the difference in the strength of gravity between two points. This would create a tensile force, which pulls and stretches materials. This strong force would tear human cells apart, with the most sensitive to these forces being cells in the brain.

Submission + - U.S. employee well-being hit new low in 2024, survey reveals (phys.org)

Submitted by alternative_right
alternative_right writes: The latest research confirms a decline in general employee well-being since 2020. In 2024, employees reported the lowest well-being scores on record, as opposed to 2020, when employees reported the highest well-being scores.

"In some cases, the lower scores represent a reduction in employee flexibility for either flexible hours or remote work," the latest research states. "In other cases, these scores could be related to challenges associated with greater economic shifts related to inflation or productivity needs."

"What we're seeing is a growing gap between how leaders and their teams experience the workplace," said Smith. "Managers may feel a return to normalcy, but that doesn't mean their employees do. Leaders must be cautious not to assume their own well-being reflects the broader workforce at their organization. The data shows a potential disconnect, and that's a signal for action."

Submission + - OnlyFans Institutes Criminal Background Checks for US Creators (xbiz.com)

Submitted by alternative_right
alternative_right writes: OnlyFans will screen creators in the United States for criminal convictions, CEO Keily Blair has announced in a post on LinkedIn.

“I am very proud to add our partnership with Checkr Trust to our onboarding process in the US,” Blair writes. “Checkr, Inc. helps OnlyFans to prevent people who have a criminal conviction that may impact our community's safety from signing up as a Creator on OnlyFans.”

Checkr is a screening service that bills itself as delivering “instant criminal and public record checks covering 99% of the U.S. population.” The company lists Uber, Instacart, DoorDash and Netflix among its clients.

Submission + - Moss spores survive 9 months outside International Space Station (phys.org)

Submitted by alternative_right
alternative_right writes: To find out, Fujita's team subjected Physcomitrium patens, a well-studied moss commonly known as spreading earthmoss, to a simulated a space environment, including high levels of UV radiation, extreme high and low temperatures, and vacuum conditions.

They tested three different structures from the moss—protenemata, or juvenile moss; brood cells, or specialized stem cells that emerge under stress conditions; and sporophytes, or encapsulated spores—to find out which had the best chance of surviving in space.

The researchers found that UV radiation was the toughest element to survive, and the sporophytes were by far the most resilient of the three moss parts. None of the juvenile moss survived high UV levels or extreme temperatures. The brood cells had a higher rate of survival, but the encased spores exhibited ~1,000x more tolerance to UV radiation. The spores were also able to survive and germinate after being exposed to 196C for over a week, as well as after living in 55C heat for a month.

Submission + - Joe Rogan Subreddit Bans 'Political Posts' But Still Wants 'Free Speech' (404media.co)

Submitted by alternative_right
alternative_right writes: In a move that has confused and angered its users, the r/JoeRogan subreddit has banned all posts about politics. Adding to the confusion, the subreddit’s mods have said that political comments are still allowed, just not posts. “After careful consideration, internal discussion and tons of external feedback we have collectively decided that r/JoeRogan is not the place for politics anymore,” moderator OutdoorRink said in a post announcing the change today.

The new policy has not gone over well. For the last 10 years, the Joe Rogan Experience has been a central part of American political life. He interviews entertainers, yes, but also politicians and powerful businessmen. He had Donald Trump on the show and endorsed his bid for President. During the COVID and lockdown era, Rogan cast himself as an opposition figure to the heavy regulatory hand of the state. In a recent episode, Rogan’s guest was another podcaster, Adam Carolla, and the two spent hours talking about Covid lockdowns, Gavin Newsom, and specific environmental laws and building codes they argue is preventing Los Angeles from rebuilding after the Palisades fire.

Submission + - NASA Is Tracking a Vast Anomaly Growing in Earth's Magnetic Field (sciencealert.com)

Submitted by alternative_right
alternative_right writes: For years, NASA has monitored a strange anomaly in Earth's magnetic field: a giant region of lower magnetic intensity in the skies, stretching out between South America and southwest Africa.

This vast, developing phenomenon, called the South Atlantic Anomaly, has intrigued and concerned scientists for decades, and perhaps none more so than NASA researchers.

The space agency's satellites and spacecraft are particularly vulnerable to the weakened magnetic field within the anomaly, and the resulting exposure to charged particles from the Sun.

Slashdot Top Deals

Sendmail may be safely run set-user-id to root. -- Eric Allman, "Sendmail Installation Guide"

Close