Those on the highest 36 mg dose of the medicine on average lost 12.4 per cent of their body weight at 72 weeks ...

CEO Luis von Ahn acknowledged that the company’s customer growth, while still impressive, was dampened by his AI commentary.

It took Duolingo's math and music courses more than a year to reach Android users, for example. And the iOS crowd has been learning chess on Duolingo for months now, ahead of other users again. Well, ...