The likelihood of a human-caused global disaster is represented by the Doomsday Clock. It's presently the closest to midnight that it's ever been. The Bulletin of the Atomic Scientists changed it from midnight to 90 seconds.

This action is justified by the ongoing confrontation between Russia and Ukraine. The Bulletin of Atomic Scientists stated in a statement, that this year, the Bulletin of the Atomic Scientists' Science and Security Board advances the Doomsday Clock's hands in part (but not entirely) due to the growing threats of the conflict in Ukraine. The world is now 90 seconds from a worldwide calamity, which is the closest it has ever been.

The Scientist also stated in the statement, that the world is reminded by Russia's oblique threats to deploy nuclear weapons that escalating the conflict—whether on purpose or because of miscalculation—carries a dreadful risk. The chance that the dispute may escalate beyond anyone's ability to control is still very high.

The world has reached a moment of nuclear threat not seen since the height of the Cold War, UN Secretary-General Antonio Guterres said in August.

The Bulletin of the Atomic Scientists invented the Doomsday clock, which has been running continuously since 1947. The ticking of the clock represents the dangers that unfettered scientific and technological progress poses to humanity. The clock's midnight represents a fictitious worldwide calamity.

The organization's board of scientists, nuclear technology specialists, and climate scientists, including 13 Nobel laureates, deliberates on current world events and chooses where to position the clock hands each year.

When it was set to 100 seconds to midnight in 2020, the hands of this clock were last moved. It started ticking at seven minutes to midnight more than 75 years ago. In 1991, when the Cold War came to an end and the United States and the Soviet Union negotiated a treaty that significantly reduced both countries' nuclear arsenals, the clock was the furthest from "doomsday" at 17 minutes to midnight.