Richard Feynman's divisive 'reverse sprinkler' problem finally solved by modern lab experiments - Scientists have pinned down why a sprinkler spins when it sucks in water instead of spraying it out - a problem that stumped Richard Feynman and has divided physicists for nearly a century. physics-mathematics

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Military's testosterone screening program could lead to overtreatment and side effects, including impaired T production -- The U.S. Department of Defense plans to conduct regular testosterone screening of service members, but this practice is not recommended by professional medical organizations. -- Stephanie Pappas

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2 METEOR SHOWERS PEAK ON THE SAME NIGHT THIS WEEK ‪-‬ WHEN TO GET THE BEST VIEWS -- The Delta Aquariids peak on July 30-31, kicking off "meteor season," though bright moonlight will likely limit views. -- Jamie Carter

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Archaeologists find 2,800-year-old burial of person clutching sea turtle vessel in El Salvador -- An unusual 2,800-year-old Mesoamerican burial found in El Salvador included a face-down skeleton clutching a sea turtle vessel. -- Kristina Killgrove

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No, OpenAI's models didn't go 'rogue' when they broke into Hugging Face. Here's what really happened. -- Experts say the models didn't "go rogue" when they escaped a controlled cybersecurity test and hacked Hugging Face. Instead, they were pursuing the goal humans had given them in ways nobody anticipated. -- Carly Page

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1,200-year-old infant burial found near famous Temple of Artemis in Turkey contains twins - one with an unusual extra rib -- The two infants buried in the same Byzantine-era grave may have been twins who died around the time of birth. -- Kristina Killgrove

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Cyclospora parasite outbreak linked to lettuce expands to 9 states, with over 1,900 people sickened -- Additional states have been added to the list of locations impacted by an outbreak of foodborne illness tied to iceberg lettuce. -- Nicoletta Lanese

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6-year-old in China dies after experimental treatment, investigation finds, raising questions about the country's gene therapy regulations -- A young girl in China died after being given an experimental gene therapy intended to treat a neurodevelopmental syndrome, an investigation by Science and Retraction Watch revealed. -- Nicoletta Lanese

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Scientists discover chunk of the universe's missing matter hiding between galaxies -- The total amount of ordinary matter in our universe adds up to roughly one-tenth of what's expected. Now, scientists think they may have found some of it between galaxies. -- Alex Keshavarzi

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AI web browsers 'aren't ready for the public,' scientists warn as they highlight massive security red flags -- By enhancing the functionality of agentic browsers, they have become insecure and could be sharing personal information. -- Peter Ray Allison

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Mathematician Hong Wang becomes third woman to win the Fields Medal, one of the world's most prestigious math prizes -- Hong Wang, a mathematician at New York University, helped solve a decades-old geometry problem and is now the third woman to win math's most prestigious award. -- Olivia Maule

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'We're trying this out of frustration': Marmots star in OnlyFans account as researchers desperately look for ways to raise funds amid US budget cuts -- As U.S. federal research budgets continue to be slashed, a team of marmot researchers have turned to unconventional sources of funding. -- Pandora Dewan

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'Extremely rare' Roman military camp found in Slovakia holds hastily buried remains of Marcus Aurelius' soldiers - with some dumped in wells -- Archaeologists found a Roman military camp in Slovakia with unusual burials of soldiers who likely fought in Marcus Aurelius' Marcomannic Wars. -- Kristina Killgrove

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Meet Phantom Twist, a stealthy new drone that hides in plain sight by tricking your eyes -- High-speed rotation exploits the concept of motion blur to conceal a new drone while it's in flight. -- Alan Bradley

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'It was unlike anything I'd witnessed before': Orcas seen headbutting a sunfish so hard that it exploded -- In two encounters in the Gulf of California, one orca held a dead sunfish in place while another rammed it at high speed, breaking the carcass into what appear to be bite-sized pieces for younger whales. -- Kenna Hughes-Castleberry

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'Once we were like you': Striking reconstructions reveal the faces of 16 people from Roman-era Hungary -- DNA analysis, 3D-printed skulls and forensic sculpture helped experts recreate people who lived near the ancient Roman frontier city of Aquincum nearly 1,700 years ago. -- Kenna Hughes-Castleberry

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NASA awakens New Horizons spacecraft to do science billions of miles beyond Pluto -- NASA's record-breaking New Horizons spacecraft has awoken from a 321-day hibernation in "good health" as it resumes unprecedented science at the solar system's edge. -- Brandon Specktor

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Mice on 'godforsaken' frozen volcanoes eat toxic plants to survive conditions 'not remotely compatible with long-term human survival' -- Researchers risked their lives to study Andean leaf-eared mice on the inhospitable peaks of the Puna de Atacama volcanoes in Chile. -- Patrick Pester

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Sacrificed Inca children died very differently than we thought, study finds -- A new look at three children who died in the Inca human sacrifice ceremony known as Capacocha reveals their last few months and moments. -- Tom Metcalfe

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NASA shares image of impossible-looking crystal growing on the space station. What is happening? -- Astronauts grew a scroll-like crystal aboard the ISS, and its strange shape reveals what happens to ordinary salts once gravity stops running the show. -- Olivia Maule

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