The document provides an overview of the International Thermonuclear Experimental Reactor (ITER) project, which aims to demonstrate the scientific and technological feasibility of fusion energy. ITER will use deuterium and tritium isotopes of hydrogen as fuel and powerful magnets to contain the extremely hot plasma and initiate nuclear fusion reactions. It is an international collaboration between the European Union, India, China, Japan, Russia, South Korea and the United States to build the world's largest nuclear fusion reactor in France. The ITER reactor will help scientists study and develop fusion energy, which could provide a virtually limitless and low-carbon energy source.