Additional comment against nuclear: water cooling, which is a real problem in a warming climate. Rivers will dry up or flood. And near the coast with rising sea levels is also difficult, using salt water. Besides, there are plenty of sustainable alternatives with a cheaper price tag, so why bother?
It’s just the creation of particles with an ultra-short lifespan, which then decay into other particles. Only there are more of this type than expected, but still within the tolerance of what the theory predicts. Additional tests are needed to say anything conclusive. That’s just what they normally like to do at CERN, they’re quite good at it. They also started the world wide web, back in the day.