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Jacob Tsimerman Lives in Number Theory

KENNETH CHANG

Dr. Tsimerman won one of four Fields Medals, an award for top mathematicians under 40, for his work on the André-Oort conjecture, but is now changing his focus to artificial intelligence.

The math of traffic jams and how to avoid them

When the roads get crowded, many drivers start changing lanes. Mathematics suggests this intuition is typically wrong

Health Care Agency Discontinues Dozens of Active Research Awards

KATRINA MILLER

The Agency for Healthcare Research and Quality slowed the awarding of new grants last year. Now it is stopping existing ones.

What to Know About Peptides the FDA Is Considering for Use

DANA G. SMITH

The agency is considering whether compounding pharmacies should be allowed to produce BPC-157, TB-500 and other previously banned peptides.

Guy Tudor, Whose Art Brought Obscure Birds to Life, Dies at 91

GUY TREBAY

A self-taught ornithologist, he won a MacArthur fellowship for his precise, resplendent illustrations that appeared in definitive field guides to tropical songbirds.

On Second Test of Its Newest Starship Design, SpaceX Sticks the Landing

KENNETH CHANG

It was the 13th test overall of Starship. The success is a boon to NASA’s moon plans and SpaceX’s hopes to deploy a million data centers in orbit.

Can This New Enzyme Turn Back the Clock in Bodily Tissues?

K. R. CALLAWAY

In a recent study, scientists devised a way of reversing the buildup of compounds that lead to some age-related diseases.

550 years later, scientists claim to have solved what killed Botticelli’s muse

Italian Renaissance painter Sandro Botticelli painted Simonetta Vespucci as Venus rising from the waves. Now, scientists think they've solved how she died

Paul Andrews, Founder of the Woodstock of U.F.O.s, Dies at 77

MICHAEL S. ROSENWALD

An annual convention in the California desert offered a safe space for believers to discuss extraterrestrial encounters, crop circles and other paranormal phenomena.