The Pentagon is preparing to wage war in a warmer world, even as it accelerates it.

Military and wartime emissions are difficult to track—but too important to ignore.

A new study suggests climate models may be overestimating how much carbon forests will absorb in a warming world, raising the possibility that global temperatures could rise even more than current projections anticipate.

In 2024, dozens of prominent researchers wrote an article in Science that introduced the world to a dizzying concept: the existential perils of so-called “mirror-life,” a type of organism based on molecular structures not found on Earth.

An eye-opening glimpse at the links between two congressional committees and more than 100 defense contractors, consultants, and lobbyists.

The nuclear attacks on Hiroshima and Nagasaki resulted in the deaths and fatal injuries of more than 210,000 people, who either died instantaneously or within months.

It’s said that Nero fiddled while Rome burned.

How Silicon Valley tech firms remade U.S. defense contracting. And then opened the Pentagon’s checkbook—wide.

On Thursday, President Trump said, in a new twist, that the U.S.-Saudi nuclear agreement would be “totally subject to” the kingdom joining the Abraham Accords.

The announcement followed the abrupt dismissal of the entire National Science Board, the advisory committee to the National Science Foundation.

Earth scientists Brian Toon and Alan Robock discuss their latest book on nuclear winter, “Earth in Flames” (Oxford University Press, 2025).

According to the new research paper, the loss of the sediment diversion plan “effectively means giving up on extensive portions of coastal Louisiana, including the New Orleans area”.

“We’re not finished learning about how to manage public lands, and this action, it kind of indicates that we’re done learning,” said Elizabeth Leger.

Anyone who cares about humanity should be deeply concerned.

Living with radioactive hot spots and stigma as Japan’s government pushes for more reactors.

When nations with well-resourced intelligence gathering services, like the United Kingdom and Australia, choose to shield their citizens from the very real impacts of planetary warming and ecological disruption, they risk aligning themselves with climate denialism efforts like those occurring in the United States, such as current National Intelligence Director Tulsi Gabbard’s decision to excise any mention of climate change from the spy community’s most recent Annual Threat Assessment.

In a May executive order, aimed at ushering in what he described as an “American nuclear renaissance,” President Donald Trump declared moot the science underpinning decades-old radiation exposure standards set by the federal government. Executive Order 14300 directed the Nuclear Regulatory Commission (NRC) to conduct a “wholesale revision” of half-a-century of guidance and regulations. In […]

Just in case Trump is indeed talking about testing a nuclear explosive device, now is probably a good time to look back at the Bulletin’s March 2024 issue, “A return to nuclear testing?”, which lays out the many negative impacts of nuclear testing.

In the pantheon of movies about nuclear catastrophe, the emotional power of A House of Dynamite is rivalled, to my way of thinking, only by Fail Safe, in which Henry Fonda, as an American president, must drop the bomb on New York City to atone for a mistaken U.S. attack on Moscow and stave off all-out nuclear war.

“I suppose it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail.” Thus wrote the famous psychologist Abraham Maslow in 1966.