Duolingo has been through a lot of changes over the past few years. What was once solely a language-learning app has grown into a social media marketing machine, a destination for math and music ...

ChatGPT volunteered to play a 1977-vintage Atari 2600 to a game of chess and came to regret it after the eight-bit chess engine from the age of Disco Fever and the introduction of the Force did better ...