Subject: unified field theory
Have we done it? It will be interesting to see the peer reviews.

https://phys.org/news/2025-04-...

In our approach, electric charge and electric currents, as well as electromagnetic forces, are seen as purely geometrical and immanent properties of spacetime itself, and not as some external objects. This approach was supported by the late physicist John Wheeler, in his vision of geometrodynamics. It turns out that the four-dimensional electromagnetic potential is really a building block of the metric tensor of spacetime.

That's more or less how gravity is viewed (relativity). If that really is how it is for EM, it would make sense to unify it with gravity. I'm sure more papers are coming, and it will be interesting to see if anyone can poke holes in them. Or falsify this one.