MORE than a month ago, I joined an early group invited to try Perplexity’s personal agents inside Comet. These agents, called the Assistant, read what is on your screen, understand your goal, and, ...

The GWTC 4.0 catalog records 128 new gravitational wave signals, revealing mergers of black holes and neutron stars detected by LIGO.

Meteorologists said the main cause of this month’s rainfall was a deep depression that formed over the Bay of Bengal at the beginning of October. However, showers have persisted even after the system ...

A chorus of tech leaders is betting on post-phone interfaces—from brain–computer links to AR eyewear—while Apple argues the ...