• Assessing the Risks of Toxic or Flammable Clouds

    The Chemical Security Analysis Center was established by the Department of Homeland Security to identify and assess chemical threats and vulnerabilities in the United States and develop the best responses to potential chemical hazards.

  • Iran Can Produce Nuclear Explosive Now, and 2 Bombs within One Month of a Breakout: IAEA

    The IAEA’s new report on Iran’s nuclear status says that Iran’s breakout timeline is now at zero. Iran has enough 60 percent enriched uranium – highly enriched uranium, or HEU — to be able to produce nuclear explosive. If it wanted to enrich the 60 percent HEU to 90 percent HEU —typically called weapon-grade uranium (WGU) — it could do so within weeks. Whether or not Iran enriches its HEU up to 90 percent, it can have enough HEU for two nuclear weapons within one month after starting breakout.

  • Protecting Nuclear Waste Containers from Metal-Corroding Microbes

    Canada has about three million bundles of used nuclear fuel, which contain the solid uranium that powers nuclear reactors. They’re stored in above-ground containers at seven facilities across the country, with 90,000 added every year. The containers only last about 50 to 100 years, but used nuclear fuel must be stored for one million years before its radiation levels return to that of naturally occurring uranium ore. Canada is getting closer to moving all its spent nuclear fuel to a single facility, and encasing each fuel container in bentonite clay, and researchers are studying whether that clay could support microbial life – which could eat away at the metal containers.

  • Keeping Communities Safe from Chemical Hazards During Hurricane Season

    Extreme weather from hurricanes and tropical storms can devastate communities along the coasts, and the threat of subsequent hazard chemical releases can be just as deadly.

  • The Pandemic: Implications for Terrorist Interest in Biological Weapons

    What if the IS or al-Qaeda obtained and spread a highly contagious virus in a community or country that they sought to punish? With the pandemic highlighting weaknesses in response efforts, will these groups now seek to obtain infectious viruses to achieve these same deadly results?

  • Bolstering Security by Detecting Hidden Anomalies

    The ability to assess deviations from expected movement requires a deep characterization of normal activity across times of day, days of the week, weeks of the year as well as across different types of people. Current human mobility modeling techniques can provide high-level insight into human movement for the study of disease spread or population migration, but they don’t provide the complex, fine-grained modeling the Intelligence Community (IC) needs to identify more subtle anomalies with confidence.

  • Threshold Reached: Iranian Nuclear Breakout Timeline Now at Zero

    Iran has crossed a new, dangerous threshold: Iran’s breakout time is now at zero. It has enough 60 percent enriched uranium, or highly enriched uranium (HEU), to be assured it could fashion a nuclear explosive. If Iran wanted to further enrich its 60 percent HEU up to weapon-grade HEU, or 90 percent, it could do so within a few weeks with only a few of its advanced centrifuge cascades.

  • Iran’s Current Nuclear-Weapons Status: The Facts

    A report published in April by the Institute for Science and International Security, and an interview with David Albright, the report’s co-author, offer startling, and disturbing, insights into the rapid, and likely irreversible, progress Iran has made toward developing a workable nuclear weapon since the Trump administration, in 2018, decided to withdraw from the 2015 nuclear deal.

  • Keeping Communities Safe from Chemical Hazards During Hurricane

    Extreme weather from hurricanes and tropical storms can devastate communities along the Atlantic, Gulf and Pacific coasts, and the threat of subsequent hazard chemical releases can be just as deadly.

  • Iran Now Has Enough Fissile Material for One Nuclear Bomb: IAEA

    Iran has enriched enough uranium for making one Hiroshima-size nuclear bomb, the International Atomic Energy Agency (IAEA) said in its quarterly report. The IAEA says that Iran now has around 43 kilograms (95 pounds) of uranium enriched to 60 percent (in March, Iran had 33 kilograms of uranium enriched to 60 percent). The 43 kg of 60 percent enriched uranium would yield about 22-25 kg of uranium enriched to 90 percent, which is weapon-grade.

  • Reforming DHS’s Biodefense Operations and Governance

    Today’s biological threats show no signs of desisting any time soon. Naturally occurring outbreaks, epidemics and pandemics, and laboratory accidents pose a growing challenge – while the number of high-containment laboratories and amount of dangerous research continues to increase unabated. “DHS, as chief among those federal departments and agencies responsible for securing the homeland, must overcome its current state of fractionation and demonstrate to the rest of the government, country, and world that it is capable of coordinating and leading efforts in biodefense and other arenas,” Carrie Cordero and Asha M. George write.

  • Codifying Support for Nuclear Inspections in Iran

    The main obstacle for a new nuclear deal with Iran is Iran’s disregard of its safeguards commitments and defiance of standard International Atomic Energy Agency (IAEA) procedures are more problematic for a nuclear deal. Resolving those outstanding inspection issues offers a far more promising pathway to prevent Iran from building nuclear weapons in the long run.

  • Computer Code to Speed Up Airport Security

    Imagine moving through airport security without having to take off your shoes or belt or getting pulled aside. Researchers are working on the Open Threat Assessment Platform, which allows the Transportation Security Administration to respond more quickly and easily to threats to air travel safety.

  • The Future of Nuclear Waste: What’s the Plan and Can It Be Safe?

    The UK is planning to significantly expand its nuclear capability — from approximately 8 gigawatts (GW) today to 24GW by 2050, which would meet around 25% of the forecast UK energy demand — in an effort to decrease its reliance on carbon-based fossil fuels. New reactors will inevitably mean more radioactive waste. Above-ground nuclear waste storage isn’t a feasible long term plan. What are the alternatives?

  • Russia's Claims of Ukrainian Biological Weapons: A Propaganda Ploy?

    Since its invasion of Ukraine, Russia has claimed Kyiv is developing biological weapons with support from the US and Germany. Experts familiar with laboratories in Ukraine say the accusations are groundless.