The original version of this story appeared in Quanta Magazine. One July afternoon in 2024, Ryan Williams set out to prove himself wrong. Two months had passed since he’d hit upon a startling ...

One July afternoon in 2024, Ryan Williams set out to prove himself wrong. Two months had passed since he’d hit upon a startling discovery about the relationship between time and memory in computing.

Zohran Mamdani, the Democratic nominee for New York City mayor, has proposed no-cost, universal child care, helping to reignite a national conversation. By Sydney Ember Universal child care has long ...