Developments of particle colliders over the last 50 years have seen tremendous progress in both energy of the collisions and intensity of the colliding beams. Progress to even higher energies was strongly stimulated by physics interests in studying smaller and smaller distances and in the creation of heavier and heavier elementary particles. Options for even higher energy colliders, than operating today, will be discussed in the talk, including their design parameters, acceleration principles as well as construction challenges.
The Fermilab program includes neutrino and muon experiments at the world most intense proton source. They include, among many others, searches for flavor violation as well as determination of the neutrino mass hierarchy. The wide array of the experiments conducted at Fermilab searching for dark matter and dark energy and their results will be covered in the presentation as well.