The first computers ever built were so large they took up entire rooms, something hard to imagine in a day and age when we carry mobile phones in our pockets. One of those massive machines, the ...

More than 2,000 years ago, Greek artisans built a compact machine of interlocking gears that could track the heavens with a precision that still unsettles modern engineers. The corroded fragments of ...

MIT professor Joseph Weizenbaum developed Eliza in the mid-1960s. His views on artificial intelligence were often at odds with many of his fellow pioneers in the field. Illustration by Meilan Solly / ...