Ask HN: Mathematicians of HN, what's something cool happening these days in?

Inspired by [1] yesterday, I'm curious to hear from mathematicians as well. Maybe it's not something that you're working on, like the other post, rather something that's happening these days in maths that's cool and may go down in history (even a small thing) [1]: https://news.ycombinator.com/item?id=19500151