The Doomsday Clock is a PR piece for a group of politicized scientists. The threat of a nuclear catastrophe is higher now than it was during the Cuban missile crisis? That doesn't ring true.
>"Midnight" has a deeper meaning to it besides the constant threat of war. There are various things taken into consideration when the scientists from The Bulletin of the Atomic Scientists decide what Midnight and "global catastrophe" really mean in a particular year. They might include "politics, energy, weapons, diplomacy, and climate science"