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Threat preparedness
Meet the machines that matter: the portable neutron detector
Nuclear materials are rarely quiet. Even when hidden inside a sealed container, they emit a kind of heartbeat through streams of particles and radiation that carry critical information about its contents. In a laboratory, scientists have the tools and expertise to read that heartbeat. But in an emergency, first responders need a way to interpret it quickly, without highly…
LLNL’s Forensic Science Center develops a new capability to detect chemical weapons
In the aftermath of suspected chemical attacks, investigators from the Organization for the Prohibition of Chemical Weapons (OPCW) step in to collect chemical, environmental and biomedical samples. Thorough forensic laboratory analysis of these samples is essential for proving what — if any — chemical agents were used and verifying their identities. Researchers at Lawrence…
Michael May, visionary LLNL director and arms control leader, dies at 100
Michael M. May, the fifth director of Lawrence Livermore National Laboratory (LLNL) and a pioneering physicist who shaped the nation’s nuclear deterrence strategy and arms control policy for more than half a century, died on May 17. He was 100. A World War II veteran, theoretical physicist, and trusted scientific adviser to multiple U.S. administrations, May’s influence…
LLNL scientists use controlled experiments to better understand nuclear fallout
In less than a millionth of a second after a nuclear detonation or a severe nuclear reactor accident, an enormous burst of energy heats the surrounding air and materials. Everything in the vicinity is vaporized into a hot, glowing cloud of gas and plasma. As that nuclear fireball expands, it mixes with air, begins to cool and condenses into tiny solid particles — creating…
Three Lawrence fellows selected for 2026 cohort
This year’s three Lawrence fellows will pursue research that spans fusion science, emerging concepts for sensing and response and earth system science. Their work reflects both the breadth of Lawrence Livermore National Laboratory’s (LLNL) mission space and the program’s commitment to enabling early-career scientists to take bold, multidisciplinary approaches to…
LLNL showcases AI-enabled science, national security and energy innovation at AI+ Expo
Lawrence Livermore National Laboratory (LLNL) leaders, scientists and engineers joined national voices at the Special Competitive Studies Project’s (SCSP) AI+ Expo May 7-9 in Washington, D.C., highlighting how AI is reshaping science, security and energy innovation. The public Expo brought together government, industry, academic and Department of Energy (DOE) national…
Big Ideas Lab podcast spotlights how Skyfall defends the power grid from cyberattacks
A blackout spread across more than a hundred cities in Ukraine after malware infected the nation’s power grid. This sophisticated breach was the first of its kind, speaking the language of the industrial control systems to carry out a remote operation on physical infrastructure. The incident led U.S. Department of Energy national security experts to ask: what would happen…
Simulations predict ground motion for earthquakes on Bay Area’s Hayward fault
The Hayward fault, part of the larger San Andreas fault system, runs 74 miles through the East Bay of the San Francisco Bay Area. The fault is overdue for an earthquake that could cause extensive damage to such a dense population zone. In a recent study, published in Seismological Research Letters, scientists at Lawrence Livermore National Laboratory (LLNL) and Lawrence…
Four decades after Chernobyl, National Atmospheric Release Advisory Center reflects on a defining moment
Documents were scattered across the floor as scientists hurriedly reviewed reports on weather patterns and radiation measurements, while colleagues in Europe awaited updates and information on the emerging radioactive crisis. Forty years later, the Chernobyl reactor accident response stands as critical experience that paved the way for what is now the National Atmospheric…
All 50 episodes of the Big Ideas Lab now available on LLNL podcast page
Lawrence Livermore National Laboratory’s (LLNL) Big Ideas Lab podcast marks a new milestone with the release of its 50th episode. The latest episode, delving into high-performance computing for energy innovation, can be found alongside the entire series on the new LLNL podcast page. Since its debut in September 2024, the Big Ideas Lab has aimed to rethink how science…
Grad student Wyatt Larrinaga explores how proteins bind to radioactive elements for fellowship at LLNL
As a fifth-year graduate student at the Pennsylvania State University, Wyatt Larrinaga investigates how proteins can be used to separate lanthanides. These elements, plus two others, make up the rare earth elements that are critical for technology, defense and a robust domestic energy supply. But somewhere along the way, Larrinaga grew interested in branching out. Or,…
Cryogenic micro-calorimetry offers a novel material-dating method for nuclear forensics and safeguards
The moment nuclear material is produced, processed or purified, it sets off a hidden countdown, marked by the half-life of its radioactive atoms as they begin to decay. For scientists tracking the origins of these substances, decoding this natural clock is crucial for verifying material histories in support of global security efforts. In a new study published in the…
Big Ideas Lab podcast explores energetic materials and the science behind explosive performance
In less than a millionth of a second, a high explosive can release its energy, generating pressures and temperatures that push materials to their limits. At Lawrence Livermore National Laboratory (LLNL), scientists in the Energetic Materials Center (EMC) study these extreme conditions using experiments, computation and specialized facilities. The latest episode of the Big…
Engineered yeast produce acids needed to refine rare-earth elements
From mining to magnet manufacturing, the process for refining rare-earth elements is complex and intensive. The supply chain for such critical materials is dominated by China — and so is the oxalic acid needed for the separation and purification stages. To move toward a U.S. supply chain for rare-earth element recovery, researchers from Lawrence Livermore National…
Allowing atoms to come and go opens the door to better materials modeling
Most materials, especially metals and ceramics, are crystals. Their atoms are arranged in three-dimensional lattices that repeat the same exact pattern, over and over again. But there’s a well-known saying in materials science: “Crystals are like people. It is the defects that tend to make them interesting.” In a new study, published in Physical Review Letters, researchers…
LLNL-led study uses machine learning, veterans’ health records to identify ALS drug-repurposing candidate
A Lawrence Livermore National Laboratory (LLNL)-led team of scientists and computational engineers has identified several existing medications that may be associated with longer survival in people with amyotrophic lateral sclerosis (ALS), using one of the largest electronic health record datasets ever assembled for ALS. Published in The Lancet Digital Health, the study…
LLNL, Meta co-develop groundbreaking polymer-chemistry dataset for training AI models
Polymers are fundamental to our daily lives, serving as the core components for a wide array of goods, including clothing, packaging, transportation infrastructure, construction materials and electronics. Advances in polymer science open pathways for recycling and upcycling waste materials into more valuable chemical feedstocks. They also can have an outsized environmental…
Pathogen-agnostic testing reveals hidden respiratory threats in negative samples
The COVID-19 pandemic brought the term “Polymerase Chain Reaction testing” into the mainstream. The PCR method is a type of nucleic acid amplification test (NAAT) that detects a pathogen by finding and amplifying components of its genetic material, and it is widely used to detect SARS-CoV-2. But these types of tests have a weakness: you have to know exactly what pathogen…
Keeping the public safe at the big game: LLNL’s RAP team deploys to Santa Clara, California
As thousands of fans streamed toward Levi’s Stadium for the Super Bowl between the Seattle Seahawks and New England Patriots, vendors hawked memorabilia, the scent of garlic fries filled the air and security officers checked clear bags beneath white tents. Somewhere in that crowd, walking the same sidewalks and concourses, were a handful of team members carrying gear…
Advanced Radiographic Capability achievements featured in Physics of Plasmas
Lawrence Livermore National Laboratory’s National Ignition Facility (NIF) is the hottest place on earth for the briefest of moments during an experiment. Now, it can be one of the brightest places thanks to the Advanced Radiographic Capability (ARC), NIF’s laser-within-the-laser. How this is possible and how it’s measured is detailed in the cover paper of the December 2025…
