In this century, progress in fundamental physics has been slow. The Large Hadron Collider hasn't yet found any surprises, attempts to directly detect dark matter have been unsuccessful, string theory hasn't made any successful predictions, and nobody really knows what to do about any of this. But there is no shortage of problems, and clues. After a quick review of our best theories of physics so far — general relativity and the Standard Model — I will list some of the main open problems.
Here are the slides and video of my Leverhulme Lecture at the International Centre for Mathematical Sciences on November 29, 2022:
You can also see slides and a video of a similar somewhat more technical talk I gave at the Cambridge University Physics Society on October 3, 2018.