With Doomsday Clock at 90 Seconds to Midnight, 'It's Time to Act'

"Ominous trends continue to point the world toward global catastrophe," The Bulletin of the Atomic Scientists warned Tuesday, explaining why the Doomsday Clock remains at 90 seconds to midnight.

Since its 1947 debut, the Doomsday Clock has represented how close humanity is to destroying the world. While it was initially created in response to nuclear arms risks, in 2024, the climate emergency, biological threats, and disruptive technologies including artificial intelligence (AI) also factor into the clock's position.

The Bulletin's new statement says that "the members of the Science and Security Board have been deeply worried about the deteriorating state of the world. That is why we set the Doomsday Clock at two minutes to midnight in 2019 and at 100 seconds to midnight in 2022."

"Last year, we expressed our heightened concern by moving the clock to 90 seconds to midnight—the closest to global catastrophe it has ever been—in large part because of Russian threats to use nuclear weapons in the war in Ukraine," the publication continues. "Today, we once again set the Doomsday Clock at 90 seconds to midnight because humanity continues to face an unprecedented level of danger."

"Our decision should not be taken as a sign that the international security situation has eased," the statement stresses. "Instead, leaders and citizens around the world should take this statement as a stark warning and respond urgently, as if today were the most dangerous moment in modern history. Because it may well be."

Nearly two years since the invasion, "a durable end to Russia's war in Ukraine seems distant, and the use of nuclear weapons by Russia in that conflict remains a serious possibility," the document states. However, Russia is just one of the world's nine nuclear-armed nations.

"Spending programs in the three largest nuclear powers—China, Russia, and the United States—threaten to trigger a three-way nuclear arms race as the world's arms control architecture collapses," the statement notes. "And the war in Gaza between Israel and Hamas has the potential to escalate into a wider Middle Eastern conflict that could pose unpredictable threats, regionally and globally."

On the climate front, "the world in 2023 entered uncharted territory as it suffered its hottest year on record and global greenhouse gas emissions continued to rise," the publication highlights. "Current efforts to reduce greenhouse gas emissions are grossly insufficient to avoid dangerous human and economic impacts from climate change, which disproportionately affect the poorest people in the world."

The statement also points out that "the revolution in life sciences and associated technologies continued to expand in scope last year," and "the convergence of emerging artificial intelligence tools and biological technologies may radically empower individuals to misuse biology."

Other AI-related concerns include the "great potential to magnify disinformation" as well as military uses. The statement says that "decisions to put AI in control of important physical systems—in particular, nuclear weapons—could indeed pose a direct existential threat to humanity."

While sounding the alarm about the world's top threats on Tuesday, the Bulletin also emphasized that it's possible to turn back the clock.

"For decades, scientists have been warning us of the dangers facing humankind," said science communicator Bill Nye, who participated in the 2024 Doomsday Clock announcement. "We could be facing catastrophe unless we better manage the technologies we've created. It's time to act."

The Bulletin's executive chair, former Democratic California Gov. Jerry Brown, asserted that "only the big powers like China, America, and Russia can pull us back. Despite deep antagonisms, they must cooperate—or we are doomed."

Outside organizations, including the U.K.-based Campaign for Nuclear Disarmament (CND), also issued calls to action.

"The Doomsday Clock remaining at 90 seconds to midnight must be a wake-up call for the entire world," said the group's general secretary, Kate Hudson. "We're fast approaching the point of no return. CND calls on all those who want peace to prevail to join us in doing everything we can to turn back the clock."