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Researchers at the University of Waterloo say a new "quadratic quantum gravity" framework could explain the universe's rapid early expansion without adding extra ingredients to Einstein's theory by hand. The idea is especially notable because it makes testable predictions, including a minimum level of primordial gravitational waves that future experiments may be able to detect. "Even though this model deals with incredibly high energies, it leads to clear predictions that today's experiments can actually look for," said Dr. Niayesh Afshordi, professor of physics and astronomy at the University of Waterloo and Perimeter Institute (PI). "That direct link between quantum gravity and real data is rare and exciting." Phys.org reports: The research team found that the Big Bang's rapid early expansion can emerge naturally from this simple, consistent theory of quantum gravity, without adding any extra ingredients. This early burst of expansion, often called inflation, is a central idea in modern cosmology because it explains why the universe looks the way it does today. Their model also predicts a minimum amount of primordial gravitational waves, which are tiny ripples in spacetime geometry created in the first moments after the Big Bang. These signals may be detectable in upcoming experiments, offering a rare chance to test ideas about the universe's quantum origins. [...] The team plans to refine their predictions for upcoming experiments to explore how their framework connects to particle physics and other puzzles about the early universe. Their long-term goal is to strengthen the bridge between quantum gravity and observational cosmology. The research has been published in the journal Physical Review Letters.

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31 Mar 2026 11:00am GMT

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31 Mar 2026 10:02am GMT

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31 Mar 2026 9:00am GMT

The GNOME 49.5 update delivers fixes across the desktop stack, including Shell, Nautilus, and Web, along with important GLib security patches.

31 Mar 2026 8:22am GMT

Fastfetch 2.61 drops Windows 7 and 8 support, introduces faster GPU detection, and transitions to a pure C build on Linux.

31 Mar 2026 7:30am GMT

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31 Mar 2026 7:01am GMT

Researchers found that common nitrile and latex lab gloves can shed stearate particles that closely resemble microplastics, potentially "increasing the risk of false positives when studying microplastic pollution," reports ScienceDaily. "We may be overestimating microplastics, but there should be none," said Anne McNeil, senior author of the study and U-M professor of chemistry, macromolecular science and engineering. "There's still a lot out there, and that's the problem." From the report: Researchers found that these gloves can unintentionally transfer particles onto lab tools used to analyze air, water, and other environmental samples. The contamination comes from stearates, which are not plastics but can closely resemble them during testing. Because of this, scientists may be detecting particles that are not true microplastics. To reduce this issue, U-M researchers Madeline Clough and Anne McNeil recommend using cleanroom gloves, which release far fewer particles. Stearates are salt-based, soap-like substances added to disposable gloves to help them separate easily from molds during manufacturing. However, their chemical similarity to certain plastics makes them difficult to distinguish in lab analyses, increasing the risk of false positives when studying microplastic pollution. "For microplastics researchers who have these impacted datasets, there's still hope to recover them and find a true quantity of microplastics," said researcher and recent doctoral graduate Madeline Clough. "This field is very challenging to work in because there's plastic everywhere," McNeil said. "But that's why we need chemists and people who understand chemical structure to be working in this field." The findings have been published in the journal Analytical Methods.

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31 Mar 2026 7:00am GMT

An anonymous reader quotes a report from New Scientist: Andrea Marinoni at the University of Cambridge, UK, and his colleagues saw that the amount of energy needed to run a data centre had been steadily increasing of late and was likely to "explode" in the coming years, so wanted to quantify the impact. The researchers took satellite measurements of land surface temperatures over the past 20 years and cross-referenced them against the geographical coordinates of more than 8400 AI data centers. Recognizing that surface temperature could be affected by other factors, the researchers chose to focus their investigation on data centers located away from densely populated areas. They discovered that land surface temperatures increased by an average of 2C (3.6F) in the months after an AI data center started operations. In the most extreme cases, the increase in temperature was 9.1C (16.4F). The effect wasn't limited to the immediate surroundings of the data centers: the team found increased temperatures up to 10 kilometers away. Seven kilometers away, there was only a 30 percent reduction in the intensity. "The results we had were quite surprising," says Marinoni. "This could become a huge problem." Using population data, the researchers estimate that more than 340 million people live within 10 kilometers of data centers, so live in a place that is warmer than it would be if the data centre hadn't been built there. Marinoni says that areas including the Bajio region in Mexico and the Aragon province in Spain saw a 2C (3.6F) temperature increase in the 20 years between 2004 and 2024 that couldn't otherwise be explained. University of Bristol researcher Chris Preist said the findings may be more complicated than they look. "It would be worth doing follow-up research to understand to what extent it's the heat generated from computation versus the heat generated from the building itself," he says. For example, the building being heated by sunlight may be part of the effect. The findings of the study, which has not yet been peer-reviewed, can be found on arXiv.

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31 Mar 2026 3:30am GMT

The water utility highlighted unsubstantiated health concerns.

30 Mar 2026 10:32pm GMT

Archinstall 4.0 introduces a modern textual UI, replacing the curses interface to enhance usability and accessibility in the Arch Linux installer.

30 Mar 2026 10:30pm GMT

"Defendants must immediately cease" actions to integrate and consolidate the firms.

30 Mar 2026 8:18pm GMT

Judge gave authors an easier attack on Meta's torrenting. Meta hopes SCOTUS ruling will block it.

30 Mar 2026 7:04pm GMT