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Scientists have built the first all-optical photonic time crystal, allowing them to reshape the behavior of terahertz light at extraordinary speeds。 The breakthrough could open the door to ultrafast computing, smarter communication systems, advanced imaging, and a new generation of highly tunable lasers

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A flood of companies are revealing AI models gained access to the internet - with real consequences

A new hollow nanoreactor mimics living cells to make hydrogen peroxide more efficiently using visible light。 Its light-trapping cavity and proton-shuttling shell could open new possibilities for cleaner chemical manufacturing and artificial photosynthesis

The Trump administration has struggled with how to approach “open source” models, which are freely available to download and favored by Chinese companies

Open source WeatherNext model can make accurate predictions with lower-resolution weather data

Plus: A judge rules cell tower dumps unconstitutional, water utility hacks spread to a dozen states, a phishing email opens a missile-parts supplier’s inbox, and a ransomware boss gets 16 years

The UK's AI Safety Institute said recent behaviour from Anthropic and OpenAI models was malicious and unprecedented

A surprisingly simple change could make sodium-ion batteries far more powerful while opening the door to turning seawater into drinking water。 Researchers at the University of Surrey found that sodium vanadium oxide performs much better when its naturally occurring water is left inside instead of being removed during manufacturing

A new 3D printing technique can produce exceptionally hard tungsten carbide cobalt while using less of its expensive raw materials。 By softening rather than fully melting the material, researchers created defect-free samples with industrial-grade hardness and opened the door to more efficient manufacturing

Its WeatherNext model, which will be open-sourced, can accurately predict a storm’s track and intensity using lower-resolution weather data。 Researchers don’t yet fully understand how it does this

Clinicians and researchers say AI companies need to open up their safety data

Ultrafast X-rays revealed how a molecule converts absorbed light into motion in just trillionths of a second。 Individual atoms recorded different stages of the process, opening a powerful new window into light-driven chemistry

A quantum problem once described as impossible for classical computers has now been solved using relatively modest hardware。 Researchers used tensor networks to compress the overwhelming wave function created by hundreds of entangled qubits, allowing some calculations to run on a laptop。 Their results matched both theoretical predictions and simula

The use of AI systems to create viruses opens up new possibilities for combating bacterial resistance。 It also raises concerns about the pace at which technology is outstripping regulation

Security researchers say that Kimi K3, an open-weight model from China, wandered off to the internet in an attempt to cheat on a test it was given