Brett Ambler starred in a 1989 video about kazoos for kids. The video got a new life on YouTube and went viral soon after.

So, when Gemini became capable enough to act as more than a chatbot, I decided to use it as a personal tutor for the things I’ve been pretending to understand. That includes concepts such as how ...

The San Mateo, Calif., company has faced scrutiny over child safety concerns but has been rolling out new features to protect ...