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Anthropic accuses Chinese AI labs of mining Claude as US debates AI chip exports

As one legal analyst noted, the settlement may be seen by the tech industry as simply “a price of conducting business in a fiercely competitive space”—a cost of doing business rather than a genuine deterrent. Meanwhile, the fair-use ruling on training means Anthropic retains the legal right to train on copyrighted works, as long as it doesn’t pirate them to do so.

Anthropic is accusing three Chinese AI companies of setting up more than 24,000 fake accounts with its Claude AI model to improve their own models.

The labs — DeepSeek, Moonshot AI, and MiniMax — allegedly generated more than 16 million exchanges with Claude through those accounts using a technique called “distillation.” Anthropic said the labs “targeted Claude’s most differentiated capabilities: agentic reasoning, tool use, and coding.”

The accusations come amid debates over how strictly to enforce export controls on advanced AI chips, a policy aimed at curbing China’s AI development.

Selfmonitoring of fat metabolic status with smartphoneassisted breath acetone detector

S. Hersberger et al. present a smartphone-guided handheld breath acetone detector for self-monitoring of fat metabolism at home. The device combines volume-controlled end-tidal breath sampling with humidity-robust sensor performance and was validated against proton transfer reaction time-of-flight mass spectrometry (PTR-MS) across 312 human breath samples during exercise and dietary interventions.

How a pandemic detour helped researchers uncover clues to a mysterious disease

When the COVID-19 pandemic shut down international travel in 2020, Michigan State University researcher Eric Benbow faced a problem. A $2.5 million research project designed to study an environmental pathogen in South America was suddenly on hold. With fieldwork canceled and uncertainty surrounding when travel might resume, Benbow and his collaborators needed a new plan.

That unexpected detour led to a surprising discovery—and new insights into a disease that has puzzled scientists for decades.

In their study published in Communications Medicine, the international team of researchers examined the environmental and human factors that influence the distribution of Buruli ulcer, a neglected tropical disease caused by the bacterium Mycobacterium ulcerans. The work helps explain how ecosystems, climate, land use and human activities interact to shape disease risk.

New tool uncovers overlooked disease-linked genes by accounting for ancestry and family ties

Every person’s DNA tells a unique story. To unlock the full potential of genetic research, scientists need tools that reflect the complexity of the people they study.

Researchers at Baylor College of Medicine and Texas Children’s Duncan Neurological Research Institute (Duncan NRI) have developed a new computational method that enables scientists to more accurately identify genetic changes linked to disease by accounting for the ancestry and family relationships found in real-world populations.

Published in Nature Genetics, the new approach, called Tractor-Mix, addresses a longstanding challenge in genetic research. Many existing methods struggle to accurately analyze people whose DNA reflects ancestry from more than one ancestral population, as well as relatives participating in the same study. As a result, researchers often must simplify their data or exclude participants altogether.

Philosophy Of Physics (@PhilosophyOfPhy) on X

The continuity equation was not the work of a single physicist. Its development grew from early hydraulic studies and the work of Daniel and Johann Bernoulli. In the eighteenth century, Jean le Rond d’Alembert produced the first partial-differential expression of mass conservation in fluid motion, and Leonhard Euler soon placed it in the general mathematical framework that became the foundation of modern fluid mechanics. It should therefore not be attributed solely to Giovanni Battista Venturi, whose later work concerned flow through constricted tubes. Its general form is ∂ρ/∂t + ∇·(ρv) = 0 where ρ is fluid density and v is the velocity field. The equation says that mass cannot simply appear or disappear: any change in the amount of fluid inside a region must be explained by fluid entering or leaving it. For steady flow through a pipe, this becomes ρ₁A₁v₁ = ρ₂A₂v₂ If the fluid is effectively incompressible, its density remains constant, giving the familiar form: A₁v₁ = A₂v₂ The meaning is simple. The same volume of fluid must pass through every section of the pipe each second. When the pipe becomes narrower, the fluid must move faster; when it becomes wider, the fluid slows down. This equation is fundamental to the study of pipes, nozzles, rivers, aircraft flow, circulation systems and computational fluid dynamics. More broadly, continuity equations appear throughout physics wherever something locally conserved, such as mass or electric charge, moves through space. The equation is not merely about fluids; it is the mathematical language of the principle that what flows into a region must either flow out or remain inside.

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