“Words were used by a President-elect of the United States in cavalier and often reckless ways to address the twin threats of nuclear weapons and climate change,” a statement said. The clock is maintained by the Bulletin Of The Atomic Scientists, which was founded by concerned US scientists involved in the Manhattan Project that developed the world’s first nuclear weapons during the World War II. The decision to move the clock is made by the Bulletin Science and Security Board and sponsors’ board, which includes 15 Nobel Laureates. It considers a wide range of factors before adjusting the clock. Previously the Doomsday Clock was at two minutes to midnight in 1953, when the United States decides to pursue the hydrogen bomb, a weapon far more powerful than any atomic bomb.