Particle accelerators and detectors are used in physics research to explore big existential questions. What are we made of? What forces govern the Universe? What is its origin story? Why do particles have mass? Scientists at CERN, home of the largest particle collider accelerator, use some of the most complex instruments and technologies to answer these questions. Often the scientific and technological advancements originated at CERN can have applications in areas with a more direct impact in our lives.