Greg just mentioned the Doomsday Clock. I was curious, so I looked up
some history about it.

The Doomsday Clock was established 68 years ago in 1947 with the time
set to 7 minutes before midnight (Doomsday).

The closest to midnight it has ever been was 2 minutes back in 1953 when
the USA and the Soviet Union both tested thermonuclear bombs.

The furthest from midnight was 17 minutes in 1991 when the Soviet Union
collapsed.

Right now it's at 3 minutes before midnight.