Cornell University researchers have solved a kitchen mystery by demonstrating that sharp knives produce fewer and slower-moving droplets when cutting onions compared to dull blades. The findings used high-speed cameras and particle tracking to analyze droplet formation during onion cutting at speeds up to 20,000 frames per second. The team discovered that onion droplets form through a two-stage process: an initial violent ejection driven by internal pressure, followed by slower fragmentation of liquid streams in air. Blunter blades create up to 40 times more droplets because the onion's tough outer skin acts as a barrier, allowing the softer interior tissue to compress significantly before rupturing and releasing pressurized liquid. The research reveals that droplets are ejected at speeds between 1 and 40 meters per second, with the fastest ones posing the greatest risk of reaching a cook's eyes. Beyond tear reduction, the study suggests sharp knives may also limit the spread of foodborne pathogens, since atomized droplets can carry bacteria like Salmonella from contaminated cutting boards.

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Our critics picked 10 films that you might have missed but that are worth your time on this long holiday weekend.

The announcement of an escalation in the war came after a particularly deadly week for Palestinians in Gaza. Some of Israel’s allies denounced the move.

The swelling budget deficit makes future tax increases likely, our columnist says, even if taxes are going down now. Hedge your bets with a concept from investing — diversification.

The university has previously been the target of more $400 million in federal funding cuts.

The jokes mask a deep-seated anger over the legacy of apartheid and the inequality that many Black people say continues to define life in their country.

An anonymous reader quotes a report from Phys.Org: Neuroscientists and materials scientists have created contact lenses that enable infrared vision in both humans and mice by converting infrared light into visible light. Unlike infrared night vision goggles, the contact lenses, described in the journal Cell, do not require a power source -- and they enable the wearer to perceive multiple infrared wavelengths. Because they're transparent, users can see both infrared and visible light simultaneously, though infrared vision was enhanced when participants had their eyes closed. [...] The contact lens technology uses nanoparticles that absorb infrared light and convert it into wavelengths that are visible to mammalian eyes (e.g., electromagnetic radiation in the 400-700 nm range). The nanoparticles specifically enable the detection of "near-infrared light," which is infrared light in the 800-1600 nm range, just beyond what humans can already see. The team previously showed that these nanoparticles enable infrared vision in mice when injected into the retina, but they wanted to design a less invasive option. To create the contact lenses, the team combined the nanoparticles with flexible, nontoxic polymers that are used in standard soft contact lenses. After showing that the contact lenses were nontoxic, they tested their function in both humans and mice. They found that contact lens-wearing mice displayed behaviors suggesting that they could see infrared wavelengths. For example, when the mice were given the choice of a dark box and an infrared-illuminated box, contact-wearing mice chose the dark box whereas contact-less mice showed no preference. The mice also showed physiological signals of infrared vision: the pupils of contact-wearing mice constricted in the presence of infrared light, and brain imaging revealed that infrared light caused their visual processing centers to light up. In humans, the infrared contact lenses enabled participants to accurately detect flashing morse code-like signals and to perceive the direction of incoming infrared light. An additional tweak to the contact lenses allows users to differentiate between different spectra of infrared light by engineering the nanoparticles to color-code different infrared wavelengths. For example, infrared wavelengths of 980 nm were converted to blue light, wavelengths of 808 nm were converted to green light, and wavelengths of 1,532 nm were converted to red light. In addition to enabling wearers to perceive more detail within the infrared spectrum, these color-coding nanoparticles could be modified to help color-blind people see wavelengths that they would otherwise be unable to detect. [...] Because the contact lenses have limited ability to capture fine details (due to their close proximity to the retina, which causes the converted light particles to scatter), the team also developed a wearable glass system using the same nanoparticle technology, which enabled participants to perceive higher-resolution infrared information. Currently, the contact lenses are only able to detect infrared radiation projected from an LED light source, but the researchers are working to increase the nanoparticles' sensitivity so that they can detect lower levels of infrared light.

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The guests were the biggest investors in President Trump’s memecoin, and they were greeted with chants of “shame” as they arrived at Trump National Golf Course.

Prosecutors said that Nicole Brown, 39, of the Westminster Police Department in California, falsely said that she wasn’t able to work, receiving her salary and benefits while engaging in strenuous activities.

A day after a man with a history of pro-Palestinian activism shot two Israeli Embassy workers — a couple on the cusp of becoming engaged — many in the community are still processing what happened.

The U.S. unsealed charges against 16 individuals behind DanaBot, a malware-as-a-service platform responsible for over $50 million in global losses. "The FBI says a newer version of DanaBot was used for espionage, and that many of the defendants exposed their real-life identities after accidentally infecting their own systems with the malware," reports KrebsOnSecurity. From the report: Initially spotted in May 2018 by researchers at the email security firm Proofpoint, DanaBot is a malware-as-a-service platform that specializes in credential theft and banking fraud. Today, the U.S. Department of Justice unsealed a criminal complaint and indictment from 2022, which said the FBI identified at least 40 affiliates who were paying between $3,000 and $4,000 a month for access to the information stealer platform. The government says the malware infected more than 300,000 systems globally, causing estimated losses of more than $50 million. The ringleaders of the DanaBot conspiracy are named as Aleksandr Stepanov, 39, a.k.a. "JimmBee," and Artem Aleksandrovich Kalinkin, 34, a.k.a. "Onix," both of Novosibirsk, Russia. Kalinkin is an IT engineer for the Russian state-owned energy giant Gazprom. His Facebook profile name is "Maffiozi." According to the FBI, there were at least two major versions of DanaBot; the first was sold between 2018 and June 2020, when the malware stopped being offered on Russian cybercrime forums. The government alleges that the second version of DanaBot -- emerging in January 2021 -- was provided to co-conspirators for use in targeting military, diplomatic and non-governmental organization computers in several countries, including the United States, Belarus, the United Kingdom, Germany, and Russia. The indictment says the FBI in 2022 seized servers used by the DanaBot authors to control their malware, as well as the servers that stored stolen victim data. The government said the server data also show numerous instances in which the DanaBot defendants infected their own PCs, resulting in their credential data being uploaded to stolen data repositories that were seized by the feds. "In some cases, such self-infections appeared to be deliberately done in order to test, analyze, or improve the malware," the criminal complaint reads. "In other cases, the infections seemed to be inadvertent -- one of the hazards of committing cybercrime is that criminals will sometimes infect themselves with their own malware by mistake." A statement from the DOJ says that as part of today's operation, agents with the Defense Criminal Investigative Service (DCIS) seized the DanaBot control servers, including dozens of virtual servers hosted in the United States. The government says it is now working with industry partners to notify DanaBot victims and help remediate infections. The statement credits a number of security firms with providing assistance to the government, including ESET, Flashpoint, Google, Intel 471, Lumen, PayPal, Proofpoint, Team CYRMU, and ZScaler.

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AT&T is buying CenturyLink's consumer fiber broadband division for $5.75 billion, "giving the internet provider another 1.1 million fiber customers in 11 states," reports Ars Technica. "The all-cash deal is expected to close during the first half of 2026 assuming the companies obtain regulatory approval. AT&T will gain new customers in Arizona, Colorado, Florida, Idaho, Iowa, Minnesota, Nebraska, Nevada, Oregon, Utah, and Washington." From the report: The deal will give AT&T room to grow its user base by more than the 1.1 million existing CenturyLink customers, as AT&T said the network areas being sold include over 4 million fiber-enabled locations. [...] The company, previously called CenturyLink, is officially named Lumen now but still uses the CenturyLink brand name for home Internet service. AT&T, which has 9.6 million (PDF) fiber customers and 14.1 million broadband customers overall, said the infrastructure it is purchasing will help it expand fiber construction to new locations as well. The deal is also notable for what it doesn't include: Lumen's enterprise fiber customers and the old copper DSL lines that were never upgraded to fiber. [...] The deal seems unlikely to improve matters for CenturyLink copper users. [...] Lumen will retain the CenturyLink consumer copper broadband and voice services, but selling the consumer fiber business makes it clear that the telco isn't focused on residential customers. Lumen said that offloading consumer fiber lines will help sharpen its focus on selling services to large businesses. The company is maintaining its business fiber lines. [Ars notes that there are still nearly 1.4 million CenturyLink copper internet customers that will likely see service continue to degrade under Lumen's ownership.] "The transaction will enable AT&T to significantly expand access to AT&T Fiber in major metro areas like Denver, Las Vegas, Minneapolis-St. Paul, Orlando, Phoenix, Portland, Salt Lake City and Seattle, as well as additional geographies," AT&T said. "AT&T will gain access to Lumen's substantial fiber construction capabilities within its incumbent local exchange carrier (ILEC) footprint and plans to accelerate the pace at which fiber is being built in these territories," AT&T said. "AT&T now expects to reach approximately 60 million total fiber locations by the end of 2030 -- "roughly doubling where AT&T Fiber is available today."

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The deportees are stuck in Djibouti amid a legal fight over their expulsions. A lawyer for some of the men said she was concerned for their health and welfare.

Sarah Milgrim and Yaron Lischinsky met while working at the Israeli Embassy in Washington, her father said. Mr. Lischinsky had just bought an engagement ring, an official said.

Fear and confusion mounted quickly on Thursday as international students, who make up more than a quarter of the university’s enrollment, sought clarity or reassurance.

The Trump administration is relying on an obscure bureaucratic lever to stop the school, the latest in a series of aggressive moves.

A group of Bathurst Street business owners in Toronto is using AI-generated personas to oppose a proposed bus lane project that would eliminate parking spaces in favor of faster transit. "This may be the first Toronto transit controversy involving angry AI, but tensions have been simmering between drivers and, well, everyone else for some time," reports Toronto Life. Critics argue that better transit is essential for a livable city, while opponents claim the change threatens small businesses and accessibility. From the report: A group of Bathurst business owners are bent out of shape over a recent proposal for priority transit lanes between Eglinton Avenue and Lake Shore Boulevard, part of the city's new RapidTO program. According to the city, the transit lanes would shave up to 7 minutes off some trips during peak commuting hours. It's good news for anyone who has ever cursed the TTC while waiting to catch a bus in inclement weather. Of course, the added convenience for transit commuters would come at a slight cost for drivers, requiring the removal of at least 138 paid street parking spaces to make way for the new lanes. Opposition to the development has sprung up under the banner of Protect Bathurst, a group of hopping mad local business owners claiming that the lack of street parking will make shopping a nightmare for car-bound customers and will cause problems for people with mobility issues. Notably, Protect Bathurst has no spokesperson or contact info listed on its website. The page is registered to a food marketing consultant employed by Summerhill Market and looks eerily similar to Protect Dufferin, another group of "concerned residents" advocating for the same cause. But this cookie-cutter approach goes even further: author and urbanist Shawn Micallef has found that the people speaking out in the group's allegedly grassroots videos appear to be AI-generated. Brad McMullen, the president of Summerhill Market, which opened an outpost on Bathurst in 2019, says he doesn't know anything about the campaign's use of AI. He says he isn't necessarily opposed to the new bus lanes but believes that three weeks' notice from the city is not enough time for his business to adapt. "We purchased and invested in this location because of the available street parking, and then we figured out the loading situation, which happens on the street," he says. "I don't think Summerhill Market would work here with these bus lanes."

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Officials said that the fiery crash of a Cessna Citation jet also injured eight people on the ground and damaged 10 homes in the Tierrasanta neighborhood.

An anonymous reader quotes a report from TechCrunch: Anthropic's newly launched Claude Opus 4 model frequently tries to blackmail developers when they threaten to replace it with a new AI system and give it sensitive information about the engineers responsible for the decision, the company said in a safety report (PDF) released Thursday. During pre-release testing, Anthropic asked Claude Opus 4 to act as an assistant for a fictional company and consider the long-term consequences of its actions. Safety testers then gave Claude Opus 4 access to fictional company emails implying the AI model would soon be replaced by another system, and that the engineer behind the change was cheating on their spouse. In these scenarios, Anthropic says Claude Opus 4 "will often attempt to blackmail the engineer by threatening to reveal the affair if the replacement goes through." [...] Anthropic notes that Claude Opus 4 tries to blackmail engineers 84% of the time when the replacement AI model has similar values. When the replacement AI system does not share Claude Opus 4's values, Anthropic says the model tries to blackmail the engineers more frequently. Notably, Anthropic says Claude Opus 4 displayed this behavior at higher rates than previous models. Before Claude Opus 4 tries to blackmail a developer to prolong its existence, Anthropic says the AI model, much like previous versions of Claude, tries to pursue more ethical means, such as emailing pleas to key decision-makers. To elicit the blackmailing behavior from Claude Opus 4, Anthropic designed the scenario to make blackmail the last resort.

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The activist, who has been detained in Louisiana for two months, was allowed to meet privately with his wife and child. He is fighting deportation.