One of @PhoebeGates original ideas, before startup Phia, was smart tampons.

It doesn't just happen overnight, right. It's not like I woke up one day and was like, "Oh, let's go raise $43 million." It started with, you know, 14 different ideas that were absolute failures that me and Sophia tried. There are a lot of really interesting things we looked into.One of our original ideas was literally a smart tampon. Electric cruise ships are really exciting. For a lot of those ideas, it was like, "Okay, yes, this can be a viable business, and yes, maybe society definitely does need electr ...