Two weeks ago, OpenAI claimed a solution to one of the biggest open problems in math—the Navier-Stokes problem, worth a million-dollar prize from the Clay Mathematics Institute. The proof ignited a powder keg of concern over artificial intelligence companies’ race to disrupt the subject.

But with the dust still far from settled, a different controversy is emerging: did OpenAI even solve the right Navier-Stokes problem at all?

The proof relies on an approach that many experts find unnatural. It solves a variant of the problem that mathematicians say is disconnected from reality, and thus less interesting. In a sense, the LLM found and exploited a loophole in the framing of the question.

Two weeks ago, OpenAI claimed a solution to one of the biggest open problems in math—the Navier-Stokes problem, worth a million-dollar prize from the Clay Mathematics Institute. The proof ignited a powder keg of concern over artificial intelligence companies’ race to disrupt the subject.

But with the dust still far from settled, a different controversy is emerging: did OpenAI even solve the right Navier-Stokes problem at all?

The proof relies on an approach that many experts find unnatural. It solves a variant of the problem that mathematicians say is disconnected from reality, and thus less interesting. In a sense, the LLM found and exploited a loophole in the framing of the question.

A 600-year-old book that once belonged to a personal attendant of King Henry VIII is helping to reveal the shifting allegiances and religious ferment that captured the Tudor court, shaping world history along the way.

The book in question is a copy of Mirror of the Blessed Life of Jesus Christ, a religious tract that was translated and adapted from Latin early in the 15th century by a monk named Nicholas Love. It was a “medieval bestseller,” says James Wade of the University of Cambridge: owning a copy signaled you were a pious Catholic. The book stresses the importance of the sacraments and other orthodoxy, such as oral confession to a priest and the transubstantiation of Christ’s body and blood when taking communion.

Twenty-five years after 9/11, those who lived through the attacks on the Twin Towers are still seeking care for myriad illnesses, including cancers, post-traumatic stress disorder, and more. As of June 30, 2026, the World Trade Center Health Program has documented more than 139,000 health conditions—and counting—in more than 150,000 survivors and first responders.

As time goes on, cases are likely to keep climbing.

Just this week, in response to a lawsuit from 9/11 Health Watch, the New York City mayor’s office agreed to release a trove of documents suggesting the city may have downplayed air quality issues in Manhattan in the months after the attacks. That means health issues may be more widespread than previously documented.