The songwriter, guitarist and singer, who died at 78, animated the Grateful Dead from within. By Jon Pareles Bob Weir — the Grateful Dead’s rhythm guitarist and one of its songwriters and lead singers ...

Physically, sound is just pressure moving through a medium. If you harness that pressure correctly, you can actually push things around using nothing but sound. That's exactly what researchers at ...

Earlier this week, some people on X began replying to photos with a very specific kind of request. “Put her in a bikini,” “take her dress off,” “spread her legs,” and so on, they commanded Grok, the ...

The town of Kuroshio in Japan is named after the swift ocean current that flows nearby. The Kuro­shio (Black Stream) stretches as wide as a megacity and carries more water than the Amazon river.