It's been a long time since Alice Charton got a good look at a human face. There are plenty of people moving through her world, of course—her husband, her friends, her doctors, her neighbors—but ...

HEIDELBERG, Germany—Every September, a critical mass of the world’s most decorated computer scientists and mathematicians gathers in the warm microclimate here. They discuss the states of their fields ...

In 1979, two M.I.T. computer-science alumni and a Harvard Business School graduate launched a new piece of computer software for the Apple II machine, an early home computer. Called VisiCalc, short ...

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The Babylonians used separate combinations of two symbols to represent every single number from 1 to 59. That sounds pretty confusing, doesn’t it? Our decimal system seems simple by comparison, with ...

Starting this week, Perplexity subscribers will have a new agentic tool at their disposal. Perplexity Computer, in the company’s words, “unifies every current AI capability into a single system.” More ...

Proof-of-stake is a mechanism for achieving consensus on a blockchain. Blockchain is a technology that records transactions that can’t be deleted or altered. It’s a decentralized database, or ledger, ...