In the 126 years since David Hilbert presented his famous 23 problems, mathematicians have made tremendous advancements. Sean McCabe for Simons Foundation; Portrait of David Hilbert by L. Reidemeister ...

“If you are a mathematician,” one of the world’s leading mathematicians recently wrote, “you may want to make sure you are sitting down before reading further.” And you’ll definitely need to sit down ...

This paper redefines dynamic multimodal fusion as a "per-sample optimization problem that directly minimizes conflict risk." It designs a differentiable modality ...

A receptionist at a doctor's office announces new privacy laws to patients in the waiting room. "Starting today," she says, "patients won't be called by their names to protect their identity." The ...

What are the most pressing global crises in 2026? Each year, the International Rescue Committee’s (IRC) Emergency Watchlist identifies the countries at greatest risk of new or worsening humanitarian ...

We look into the mental health crisis affecting American youth. By Sam Sifton I am the host of The Morning. The numbers are staggering. Nearly one in four 17-year-old boys in the United States has ...

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The leading approach to the simplex method, a widely used technique for balancing complex logistical constraints, can’t get any better. In 1939, upon arriving late to his statistics course at the ...

When people hear a problem is widespread, they are less likely to consider it serious—and less inclined to act. The hope, for many, is that highlighting the prevalence of an issue will help them ...

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We asked U.S. teens how common a variety of problems are among students at their school. Anxiety and depression tops the list, with 30% of teens saying it’s extremely or very common at their school.

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