26 Oct What is the The Doomsday Clock?
What Is the Doomsday Clock? A Warning for Our Time
Imagine a clock that doesn’t just tell time, but measures how close we are to the edge of a global collapse. That is the purpose of the Doomsday Clock: a symbolic countdown to how near humanity is to an existential disaster, from war, technology, or environmental breakdown. It captures in a simple image the complex threats that loom over us.
This clock was first created in 1947 by the Bulletin of the Atomic Scientists. It began as a warning about nuclear weapons, but over the decades it has grown to include other dangers such as climate change, pandemics, and emerging technologies. The closer the clock is to midnight, the closer we are, symbolically, to catastrophe.
Today, the Doomsday Clock acts as a call to awareness. It does not predict an actual minute of destruction. Instead it reflects how scientists assess the balance between risks and responses. And now more than ever, climate change plays a central role in that judgment.
How the Clock Moves: Who Decides and What Counts
Initially overseen by Bulletin editor Eugene Rabinowitch, the responsibility for setting the Doomsday Clock’s time has since been entrusted to the Bulletin’s Science and Security Board (SASB). Composed of 18 leading experts from various fields including policy, diplomacy, military history, nuclear science and climate science, including Nobel Laureates, this group deliberate annually to determine the clock’s position.
Their assessment involves rigorous discussions on world events, considering a wide range of factors such as geopolitical tensions, technological developments, and environmental challenges that pose catastrophic risks. They culminate in the placement of the clock’s hands to signify the current level of danger.
Each year, a group of experts, the Bulletin’s Science and Security Board, in consultation with its Board of Sponsors (which includes Nobel laureates), meets to decide where the clock’s hands should stand. They consider a wide set of threats: global conflict, nuclear arms proliferation, disruptive technologies, biological risks, and climate change. Their decision blends scientific data, policy trends, and expert judgment.
They treat “midnight” as a symbolic point of global collapse, a moment when multiple risks knit together into a runaway disaster. So if the clock is set at, say, 89 seconds to midnight, that means the experts believe we are very close to tipping into a dangerous zone.
In 2025 the clock was moved to 89 seconds to midnight, the closest it has ever been. The Bulletin explained that failure to act decisively against climate change, combined with rising geopolitical tension and emerging risks, drove the decision.
A Short History: From Nuclear Alarm to Climate Warning
The idea of the clock emerged just after World War II, when scientists from the Manhattan Project and others worried about the existential risks of atomic weapons. They created the Bulletin of the Atomic Scientists to warn the world. In 1947 the first version of the clock showed 7 minutes to midnight.
Over time, the clock has moved closer or further from midnight, reflecting changes in global risk. During the Cold War it often crept forward; in more hopeful times it moved backward, such as following major arms reduction treaties. That journey shows the ebb and flow of human choices, we have some control over where we want to be.
In recent years, climate change has become one of the strongest influences on the clock’s setting. The Bulletin first officially included climate change in its risk assessments around 2007. Since then, worsening weather extremes, rising sea levels, and record-breaking global heat have increasingly pushed the clock forward.
The Role of Climate Change in the Clock’s Warning
Climate change is not a distant danger. It is already reshaping ecosystems, economies, and human lives. The Bulletin now treats climate impacts as an existential threat multiplier, something that makes other risks worse. Droughts, floods, heatwaves, and habitat collapse can worsen resource conflicts, drive mass migration, and undermine social stability.
In its 2025 statement, the Bulletin noted that in 2024, humanity edged ever closer to catastrophe. This lack of sufficient progress in many areas, especially climate action, demands that the Doomsday Clock be moved forward.
Because climate change evolves slowly compared to nuclear flashpoints, it might seem less urgent, but that is misleading. Damage can become irreversible. Delays in reducing carbon emissions compound risk. The clock’s closeness to midnight is a signal that we may soon cross thresholds beyond which we can’t easily return.
What Time are We Now?
In recent years, the Doomsday Clock has witnessed significant shifts, mirroring the evolving geopolitical landscape and the emergence of new threats.
As of the latest update which was in 2023, the Doomsday Clock stands at 90 seconds to midnight, the closest it has ever been. This adjustment, from its previous position of 100 seconds to midnight in 2020, signifies heightened concerns about global security.
The decision to move the clock forward was influenced significantly by Russia’s invasion of Ukraine, which has reignited fears of nuclear conflict.
However, while the war in Ukraine played a significant role, it was not the sole factor contributing to the clock’s adjustment. Rather, the setting of the clock serves as a multifaceted reflection of global challenges, including nuclear proliferation, climate change, and other existential risks.
A Glimmer of Optimism amid the Gloom
Despite the gravity of the situation, it’s important to understand that the purpose of the Doomsday Clock is not to instill fear but to galvanize action. The striking of midnight on the Clock serves as a call to action, reminding us of our collective responsibility to safeguard the future of our planet and ensure the survival of generations to come.
The key lies in proactive engagement and advocacy for change, emphasizing that it is not too late to alter the course of history and prevent civilization-threatening outcomes.
Fortunately, there is still hope. The growing momentum of the climate movement, coupled with advancements in renewable energy technology and sustainable practices, offers a glimmer of optimism amid the gloom. From grassroots activism to international agreements such as the Paris Agreement, there are signs of progress in the fight against climate change.
However, time is of the essence. The window of opportunity to avert the most catastrophic impacts of climate change is rapidly closing. The decisions we make today will reverberate for generations to come, shaping the fate of humanity and the planet we call home.
How We Can Move the Clock Back
The Doomsday Clock is not fixed. In moments when humanity acts wisely and decisively, it has been pushed away from midnight. To move it back, we need:
- Deep emissions cuts and speed in adopting clean energy
- Stronger international cooperation to reduce nuclear arsenals
- Ethical deployment and regulation of new technologies
- Systems for early warning and resilient infrastructure
- Civic engagement, holding leaders accountable and building public awareness
Every step matters. The clock’s closeness to midnight is a signal: we are here, and we must act.
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