They laugh about their credit card bills. They laugh about their aches and pains. They laugh about the medication they have to take. They laugh about everything in laughter yoga. That's the point.

Amazon on Wednesday promised to keep virtual assistant Alexa from spontaneously cackling, giving people eerie feelings about what the artificial intelligence might be plotting. Users of smart speakers ...

Joaquin Phoenix is the latest actor to play Batman’s cackling archnemesis, Joker. His predecessors include Cesar Romero, Jack Nicholson, Heath Ledger, Mark Hamill and Jared Leto. Can you tell whose ...