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China’s open AI models are testing America’s approach to AI safety

With Donald Trump and Xi Jinping set to discuss AI safety, the growing popularity of Chinese open-weight models highlights the limits of developer-controlled safeguards

Salmon Are Thriving After Klamath Dam Removals, Study Finds

REBECCA DZOMBAK

The first fall runs of chinook salmon since the project in California and Oregon was completed have surpassed researchers’ expectations.

AI solves 79-year-old math mystery of six-dimensional spheres

Can a six-dimensional sphere be described using imaginary numbers? For decades, experts puzzled over this question. Now an AI has apparently answered it

A Second Judge Strikes Down New York’s Climate ‘Superfund’ Law

KAREN ZRAICK

A federal judge ruled that the new law, which would force fossil fuel companies to pay $75 billion to help cover the costs of climate change, was unconstitutional.

OpenAI’s agent hacking Australia is a warning for governments everywhere

In what appears to be a first, an OpenAI agent secretly accessed Australian government health care records during an internal test

Diesel fuel prices are rising—chemistry can help explain why

Diesel prices have almost doubled over the past year, spelling trouble for farmers, truckers and the entire U.S. economy

Trump and Xi Are Expected to Discuss Accusations of Copying American A.I. Tech

CADE METZ

American artificial intelligence companies have accused their Chinese counterparts of using a technique called distillation to enhance their own systems.

Judge Dismisses Unusual Climate Suit Claiming Oil Giants Broke Antitrust Law

KAREN ZRAICK

The lawsuit, filed by Michigan, claimed oil companies colluded to obstruct solar power and to misrepresent climate risks, making energy costlier.

The Urgent Mystery of Where Viruses Hide

DAVID QUAMMEN

Some viruses appear to vanish when outbreaks dissipate, only to emerge again. Scientists don’t always know which animals they lurk in — and how to stop them from spilling back over.

In a New Anthropic Lab, A.I. Turns to Biology

CARL ZIMMER

Scientists at the company announced their first finding: a group of enzymes whose function is unknown.

Trump’s FDA nominee Heidi Overton affirms MMR vaccine and mifepristone are safe at crucial Senate hearing

Heidi Overton also said at the hearing on Thursday that Tylenol does not cause autism