CERN (Conseil Européen pour la Recherche Nucléaire) is the world's largest particle physics laboratory, located near Geneva, Switzerland, on the Franco-Swiss border. Founded in 1954 by 12 European nations, it now includes 23 member states and welcomes researchers from over 100 countries, embodying global scientific cooperation.

CERN's core mission is to explore the fundamental structure of the universe by studying subatomic particles. Using powerful particle accelerators—most notably the Large Hadron Collider (LHC)—scientists smash protons or heavy ions together at nearly the speed of light. Detectors like ATLAS, CMS, ALICE, and LHCB then record the resulting particle showers, allowing physicists to test predictions of the Standard Model and search for new physics.

The LHC, a 27-kilometer ring of superconducting magnets buried 100 meters underground, is CERN's flagship instrument. In 2012, it enabled the landmark discovery of the Higgs boson—a particle that explains how others acquire mass—confirming a 50-year-old theory and earning the 2013 Nobel Prize in Physics for François Englert and Peter Higgs.

Beyond fundamental research, CERN drives innovation with real-world impact. The World Wide Web was invented at CERN in 1989 by Tim Berners-Lee to help scientists share data. Other spin-offs include advances in medical imaging (PET scans), cancer therapy (hadron therapy), grid computing, and cryogenics.

CERN champions open science: experimental data is widely shared, publications are open-access, and educational programs train thousands of students and teachers annually. Its computing infrastructure—the Worldwide LHC Computing Grid—processes over a petabyte of data daily, distributed across global centers.

Operating on a budget of roughly 1.4 billion CHF annually, CERN demonstrates how large-scale, long-term international collaboration can push the boundaries of knowledge. It remains a beacon of peaceful cooperation, where scientists from diverse backgrounds unite to answer humanity's deepest questions: What is the universe made of? How did it begin? What are the fundamental laws governing reality?