Bulletin of the Atomic Scientists

At its foundation, the Bulletin is a media entity that offers a free-to-access website and publishes a magazine every two months. However, we are much more than just that. Our website, the renowned Doomsday Clock, and our regular events aim to promote practical solutions during a time when technology is evolving faster than our ability to manage it. The Bulletin concentrates on three key areas: nuclear threats, climate change, and disruptive technologies. The common thread among these subjects is our belief that since humans have created these challenges, we also have the power to control them. The Bulletin operates as an independent, nonprofit 501(c)(3) organization. We bring together the most knowledgeable and influential experts on human-made dangers and share their innovative ideas with a worldwide audience. We engage in thoughtful discussions and are unafraid to confront unsettling truths.

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Why we should seriously consider vaccinating wild birds to control bird flu

1 day ago | thebulletin.org | Matt Field

Avian H5N1 took a big leap about four years ago. Previously the virus, first detected in the mid-1990s, would tear through domesticated poultry, killing off flocks in days. It occasionally jumped to wild birds, but it never managed to spread very far for very long. That changed in 2021 to 2022. Avian influenza or “bird flu” had long been fairly innocuous in wild birds, but the latest strain left birds severely stricken with neurological or other symptoms.
Why we should seriously consider vaccinating wild birds to control bird flu

1 day ago | thebulletin.org | Matt Field

Avian H5N1 took a big leap about four years ago. Previously the virus, first detected in the mid-1990s, would tear through domesticated poultry, killing off flocks in days. It occasionally jumped to wild birds, but it never managed to spread very far for very long. That changed in 2021 to 2022. Avian influenza or “bird flu” had long been fairly innocuous in wild birds, but the latest strain left birds severely stricken with neurological or other symptoms.
Beyond Iran: a new nuclear doctrine for the Persian Gulf

1 day ago | thebulletin.org | John Mecklin

After a letter was exchanged between US President Donald Trump and Iranian Leader Ayatollah Ali Khamenei, and since the first talks of April 12, four rounds of indirect and direct bilateral negotiations about Iran’s nuclear program have made progress. Iran Foreign Minister Abbas Araghchi and President Trump’s chief negotiator Steve Witkoff are leading the talks. At this stage of the talks, both sides should have reached a mutual understanding on verification and transparency measures.
Interview: The ‘holy grail’ of pandemic preparedness-the search for a universal vaccine

2 days ago | thebulletin.org | Matt Field

PREMIUM A colorized structure of a prototype from an earlier trial for a universal flu vaccine, known as H1ssF_3928, at the NIH Clinical Center in Bethesda, MD.
Russian nuclear weapons, 2025

2 days ago | thebulletin.org | Hans M. Kristensen |Matt Korda |Eliana Johns |Mackenzie Knight

Russia is nearing the completion of a decades-long effort to replace all of its strategic and non-strategic nuclear-capable systems with newer versions.
Eliminating US science advisory committees will harm the public and open the door to special interests

3 days ago | thebulletin.org | John Mecklin

In democratic societies, science advisory committees ensure that policy decisions impacting public health, the environment, and technological innovation are rooted in evidence rather than political ideology. These committees—composed of scientists and other experts from academia, state and local government, industry, and nonprofits—play a pivotal role in shaping evidence-based policymaking via rigorous and transparent, fact-based deliberations.
The India-Pakistan conflict continues for a third day. So does the possibility of nuclear escalation.

5 days ago | thebulletin.org | John Mecklin

This photograph, taken on April 16, shows the Salal Dam on the Chenab River in the Reasi district of Jammu and Kashmir, India. As tensions escalate between India and Pakistan after the deadly attack in south Kashmir's Pahalgam, India has shut all gates of Salal Dam, restricting water flow to Pakistan. (Photo by FAISAL KHAN/Middle East Images/AFP via Getty Images) India and Pakistan continued cross-border military action against one another on Friday.
Casey Means, the RFK Jr.-allied wellness influencer Trump wants for surgeon general, isn't anti-vax enough for anti-vax right

6 days ago | thebulletin.org | Matt Field

President Donald Trump stocked his first term with characters out of Republican central casting. There was Vice President Mike Pence, the evangelical; Chief of Staff John Kelly, a Marine general; and Health Secretary Alex Azar, a corporate pharmaceutical executive, among others. Many, like Kelly, who after leaving the administration said Trump met the definition of a fascist, parted with the president on bad terms. By contrast, Trump’s new crew is heavy on loyalists or right-wing media stars.
How the dismantling of NOAA threatens the Keeling Curve

1 week ago | thebulletin.org | John Mecklin

The Mauna Loa Observatory (Credit: Wikipedia) There are trillions upon trillions of numbers in the world. We use numbers to describe almost every conceivable thing in the universe. But there is one number that surpasses all others for the enormous impact it will have on every living thing on Earth over the next few thousand years. We consider it so important that we’ve dedicated our lives to acquiring and understanding it.
Will America be “flying blind” on bird flu? A key wastewater-tracking program may soon end

1 week ago | thebulletin.org | Matt Field

Peering into wastewater for public health has a history dating back at least to the late 19th century, when a biologist in Boston cultured sewage in beef jelly, bouillon, boiled potatoes, and milk to see if anything would grow. Later, scientists in Scotland looked at wastewater to assess the spread of typhoid. After injecting monkeys with sewage in the 1930s, American researchers realized that wastewater polio virus concentrations correlated with community infections.