The Avengers have often faced villains who are more powerful than them, but they've always been able to defeat these foes.

More drops for superstars caught up in Wall Street’s artificial-intelligence frenzy are knocking the U.S. stock market off its record highs.

Tropical storms pummeled the land and ravaged ecosystems. Powerful floods engulfed streets and left cars stuck in mud. And fires scorched trees and ...

More drops for superstars that had earlier soared in Wall Street’s frenzy around artificial-intelligence technology are dragging the U.S. stock market lower.