The incident at Three Mile Island heralded a dramatic shift in public attitudes towards nuclear power and the second reactor never returned to service.

Nuclear propulsion enabled Nautilus to smash numerous records including those for both submerged speed and distance, and became the first submarine to transit the North Pole in August 1958.

On the 24th December 1955, the Colorado Springs’ Continental Air Defense Command first began giving children the current location of Santa as he made his way across the world delivering presents.

When news of the incident reached the Soviet Union, party leader Leonid Brezhnev wrote to Carter condemning the ‘tremendous danger’ caused by the error.

‘The eventual development of this new force by other nations was to be expected. This probability has always been taken into account by us’.