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New study explores potential cross-species spread of chronic wasting disease
A new study found that chronic wasting disease can sometimes spread silently, with infectious prions present even in animals that show no symptoms. While there …
Reeves ‘hopes’ to fund defence without tax rises
UK chancellor says cabinet has to decide where to cut spending to pay for extra military budget
A quantum state that lasts forever may finally be within our grasp
Defying the laws of thermodynamics, experiments are beginning to show that a quantum state that is frozen forever might not be impossible. If we can …
‘At first, the idea does sound crazy’: meet the scientists trying to …
Sea ice is melting fast, worsening the climate crisis, but a bold attempt to rethicken it is showing early signs of success ‘This would have …
Amazon’s capable sound system is over $100 off ahead of Prime Day
Built-in television speakers are almost always underwhelming, so getting a soundbar is the best way to elevate any and all content. If you want to …
Watch: Defence spending plans fall well short, says Healey
The ex-defence secretary repeats his call for more funding in a Commons speech following his resignation.
The Ars Technica 2026 Reader Survey: Let your voice be heard!
Tell us how you read Ars, and what you'd like to see more (or less!) of on the front page.
World Cup Exposes Growing Global Prediction Market Rift
This year’s World Cup is the first since prediction markets like Kalshi and Polymarket exploded to popularity as a new way to bet on sports.
Probably raises $9M to build a more reliable kind of AI
Probably wants to prevent hallucinations and factual errors from reaching users, and achieve accuracy on par with deterministic systems.
Most people who stop GLP-1 drugs like Ozempic eventually return
Many people prescribed GLP-1 drugs for type 2 diabetes (such as Victoza, Ozempic, or tirzepatide) stop taking them, but a surprising number later return to …
Walking shark found in Papua New Guinea is new to science
Hemiscyllium dudgeonae is the tenth recorded species of walking shark, which use their pectoral fins to move across reef flats, and its limited range means …
Swedish man jailed for four years for coercing wife into sex with …
The 61-year-old was found to have coerced his wife into sexual acts with men he found online in exchange for payment.
Hungary's MPs block return of Orbán, limiting rule of PM to eight …
The vote fulfils a promise by new PM Péter Magyar to stop his predecessor from becoming prime minister again.
Thames Water moves step closer to nationalisation after government objects to rescue …
The environment secretary says the deal does not do enough for consumers or the environment.
Thames Water moves step closer to nationalisation after government objects to rescue …
The environment secretary says the deal does not do enough for consumers or the environment.
Semaglutide (Ozempic) linked to fewer bone fractures despite greater weight loss
A large real-world study suggests semaglutide (Ozempic, Wegovy, Rybelsus) may offer an unexpected bonus for people with type 2 diabetes: stronger protection against bone fractures …
Autism may have two distinct subtypes that vary by brain activity
Evidence is mounting that there are distinct subtypes of autism, and now, scientists have found that the condition can vary according to the strength of …
S&P 500 Slips as Semiconductor Stocks Take a Breather; SpaceX Extends Gains
US stocks fell Tuesday, led lower by declines for technology companies after recent big gains.
Scientists found a way to explain bird flocks that “defy” Newton’s third …
Physicists have solved a long-standing problem involving systems that appear to violate Newton’s third law, such as bird flocks and bacterial swarms. By adding carefully …
This startup’s super metals could soon be in military drones, luxury watches, …
Instead of heating metals, Foundation Alloy beats them into submission. The startup has raised $22 million to scale up production of its alloys.
SpaceX to acquire Cursor for $60B in stock, days after blockbuster IPO
The deal is supposed to help SpaceX's struggling AI division. The company told IPO investors it sees a $26 trillion addressable market in AI.
Cuba tourism collapses as US pressure campaign bites
The number of foreign visitors is down by 58% compared to last year, Cuban officials say, amid sanctions and an effective oil blockade.
Critical Copilot vulnerability allowed hackers to steal 2FA code from users
SearchLeak exploit shows why the industry's approach to LLM security fails over and over.
Arctic Ocean reaches tipping point that could be dire for marine life
Disappearing sea ice is letting more sunlight in the Arctic Ocean and boosting phytoplankton growth, but this has depleted a crucial nutrient, which could severely …
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