Doomsday Clock

The Doomsday Clock is a symbol that represents the likely possibility of human-caused threat to humanity and possible extinction or non-reversable damage. Kept going since 1947 by the members of the "Bulletin of the Atomic Scientists" at the University of Chicago in Chicago, Illinois, United States. The clock is a metaphor for threats to humanity.
Background.
The clock shows how close the world is to a global catastrophe as a number of minutes or seconds to midnight, changed in January of each year. When the clock hits midnight, it means that a global event that would harm humanity is near.
The main reasons why the clock would change its times are nuclear risk and climate change.
On January 23, 2020, the Clock was moved further, to 100 seconds (1 minute 40 seconds) before midnight, meaning that the Clock's status today is the closest to midnight since the Clock's start in 1947. In 2021 and 2022, the clock's time was unchanged, staying at 100 seconds before midnight.