Bernard Bigot (director-general of ITER tokamak)

In a special broadcast of Hyde Park Civilisation we visit Institute of plasma physics of the Czech Academy of Sciences. The reason is simple - our guest is head of International Thermonuclear Experimental Reactor. ITER should bring a revolution into harnessing of power - clean, safe and virtually inexhaustible source of energy. Instead of splitting nuclei as in nuclear power plant tokamak fuses them together. How does it work exactly? Why does it need a temperature of 150 million degrees? And when will tokamak - exactly ITER - be fully operational?