Not enough to make superpowers, but we sure did irradiate a lot. The clear mark of human civilization in the geological record. Past discussions of the Silurian Hypothesis.
2010 Neanderthal DNA news and the possibility of this informing the film. Extincting things more by accident than on purpose in pre-agricultural times. Consistent neanderthal pronunciation consistency issues.
Causing global nuclear war so you can… rule over the ashes? At least the Magneto version of the plan didn’t destroy infrastructure.
The energy levels required for useful destructive resonance as a superpower. Brown-noting your enemies in combat. Once more determining that functional immortality is the best power that w actually want.
Fitting nuclear submarines in your megayacht. Ice floes vs icebergs vs glaciers. Where to get the best ice for your drinks.