The day we find out how close we are to the end of civilization, thanks to the annual update of the Doomsday Clock, which will be announced today at 10 a.m. ET in Washington, D.C.

Last year, the Doomsday Clock was set at 90 seconds to midnight, the closest to midnight the clock has ever been.

Tuesday marks the first update to the clock since the start of the Israel-Hamas war and the second since Russia's invasion of Ukraine renewed fears of global nuclear war.

Speakers at the event will include science educator Bill Nye and Rachel Bronson, president and CEO of the Bulletin of the Atomic Scientists, which oversees the clock.