The Bulletin of the Atomic Scientists on Thursday will announce the 2018 time on its Doomsday Clock, according to the group of nuclear experts and scientists.
The Washington Post on Thursday reported that the clock is a metaphorical measurement of how close humankind is to a global catastrophe ending their species.
The clock last year measured 2 1/2 minutes to "midnight" - meaning such an apocalyptic scenario - its closest to that extreme since 1953.
The U.S. tested its first thermonuclear device in 1953, and the Soviet Union followed months later by conducting its first trial of a hydrogen bomb.
It remains unclear which way the clock will turn this year, but recent tensions between the U.S. and North Korea over the latter's pursuit of nuclear weapons suggests the ticker will stay closer to "midnight."