Instacart has quietly turned grocery shopping into a personalized pricing experiment, where two people ordering the same carton of eggs from the same store can be charged different amounts without ...

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 ...

For decades, communications leaders understood the rules of access. If you wanted attention at scale, you went through editors, producers, publishers and journalists. Media gatekeepers decided what ...