• How to Survive a Tactical Nuclear Bomb? Defense Experts Explain

    What would happen during a tactical nuclear bomb explosion, including the three stages of ignition, blast, and radioactive fallout? How one might be able to survive such an explosion?

  • Pentagon Overhauls Chem-Bio Defense

    DOD last week said it was overhauling its approach to countering chemical and biological weapons. Rather than continuing to focus on developing countermeasures for a specific list of threat agents, the Pentagon will develop measures that can adapt to a range of evolving biological and chemical threats.

  • The Center of Gravity for Chemical Threats

    DHS S&T’s Chemical Security Analysis Center (CSAC), located on the U.S. Army’s Aberdeen Proving Ground, CSAC is the nation’s only federal laboratory dedicated to assessing threats associated with large-scale chemical incidents or acts of chemical terrorism.

  • Was That Explosion Chemical or Nuclear?

    If an underground explosion occurs anywhere in the world, there is a good chance that a seismologist can pinpoint it. However, they won’t necessarily be able to tell you what kind of explosion had occurred—whether it is chemical or nuclear in nature.  New PNNL research makes it easier to differentiate between the two.

  • A New Way to Assess Radiation Damage in Reactors

    A new method could greatly reduce the time and expense needed for certain important safety checks in nuclear power reactors. The approach could save money and increase total power output in the short run, and it might increase plants’ safe operating lifetimes in the long run.

  • Yeast Material Developed for Training First Responders on Biothreats

    First responders who train for emergencies involving threats from biological agents such as bacterial or viral pathogens, need to do so in a safe and careful manner. To help meet their needs, researchers from the National Institute of Standards and Technology (NIST) have developed a reference material based on yeast cells.

  • Preparing More STEM Students for Careers in Nuclear Science and Security

    New funds will support efforts to educate and train the next generation of scientists and engineers and provide innovative solutions to challenges related to nuclear security.

  • The Cold War Legacy Lurking in U.S. Groundwater

    In America’s rush to build the nuclear arsenal that won the Cold War, safety was sacrificed for speed. ProPublica has cataloged cleanup efforts at the 50-plus sites where uranium was processed to fuel the nation’s nuclear arsenal. Even after regulators say cleanup is complete, polluted water and sickness are often left behind.

  • Low-Cost Sensor Records the Level of Rivers

    Researchers have developed a method that allows the water level of rivers to be monitored around the clock. The cost-effective sensor is for instance suitable for area-wide flood warning systems.

  • Zaporizhzhia: What Would Be the Consequences of an Accident?

    Although it’s impossible to say for sure what consequences an accident at Ukraine’s Zaporizhzhia nuclear power plant might have on human health in the environment nearby, experts can make some predictions.

  • What Would Happen If a Nuclear Bomb Was Used in Ukraine?

    Atomic bombs dropped on Hiroshima and Nagasaki, and meltdowns at the Chernobyl and Fukushima power plants clearly affected people’s health. But experts say it’s hard to predict the fallout from a nuclear war today.

  • Sensor Technology Detects Fires Before They Start

    Fire alarms generally operate by detecting the presence of smoke, open flame, or higher-than-normal levels of carbon monoxide. Such indicators, however, are byproducts of a fire once it has already started. By using functional nanomaterials-based fire sensor technology, researchers hope to take a step forward from existing detection methods.

  • Mobile Data Collected While Traveling Over Bridges Could Help Evaluate Their Integrity

    A new study suggests mobile data collected while traveling over bridges could help evaluate their integrity.

  • Seismic Sensing Reveals Flood Damage Potential

    Rapidly evolving floods are a major and growing hazard worldwide. Currently, their onset and evolution are hard to identify using existing systems. Seismic sensors already in place to detect earthquakes could be a solution to this problem.

  • The Next Generation of Explosives Trace Detection is Here

    Launched in fiscal year 2020, NextGen Explosives Trace Detection (ETD) expands the scope of aviation checkpoints technology, resulting in the advancement of technologies that can quickly and accurately collect and analyze samples in a variety of ways, including from direct contact with the subject, non-contact sampling via vapors, and even through barriers.