• NRC weakens a critical safety regulation, ignoring Fukushima disaster lessons

    The Nuclear Regulatory Commission’s (NRC), in a 3-2 vote, approved a stripped-down version of a rule originally intended to protect U.S. nuclear plants against extreme natural events, such as the massive earthquake and tsunami that triggered meltdowns at the Fukushima Daiichi nuclear plant in Japan in March 2011. The decision will leave U.S. nuclear plants dangerously vulnerable to major floods and earthquakes.

  • Robots to operate in nuclear no-go zones

    Sturdy, intelligent robots which react to their surroundings are being developed to work in situations which are too dangerous for humans, such as cleaning up Europe’s decades-old radioactive waste or helping during a nuclear emergency.

  • Death in the air: Revisiting the 2001 anthrax mailings and the Amerithrax investigation

    Time may have dimmed the memory of the 2001 anthrax attacks and the sense of urgency surrounding the efforts to identify the attacker. The attacks, which involved mailings of five anthrax-laced letters to prominent senators and media outlets, killed five individuals and made seventeen others ill. The anthrax mailings played a crucial role in raising concerns over possible terrorist use of biological agents in attacks against the homeland. As a result of the anthrax scare, Americans’ perceptions of terrorism came to include an existential fear of biological terrorism.

  • Breeding challenges of land mine-finding rats

    Thousands of people – many of them children – are hurt or killed by land mines each year, so finding these devices before they explode is critical. There is a surprising champion of detection: the African giant pouched rat. Native to sub-Saharan Africa, the pouched rats are large – they can grow up to 3 feet long, including the tail – but are still too small to set off the land mines. They have an exceptional sense of smell – they are also used to detect tuberculosis – but scientists know very little about their biology or social structure, and they’re difficult to breed in captivity.

  • The quiet threat inside ‘internet of things’ devices

    As Americans increasingly buy and install smart devices in their homes, all those cheap interconnected devices create new security problems for individuals and society as a whole. The problem is compounded by businesses radically expanding the number of sensors and remote monitors it uses to manage overhead lights in corporate offices and detailed manufacturing processes in factories. Governments, too, are getting into the act – cities, especially, want to use new technologies to improve energy efficiency, reduce traffic congestion and improve water quality. The number of these “internet of things” devices is climbing into the tens of billions. They’re creating an interconnected world with the potential to make people’s lives more enjoyable, productive, secure and efficient. But those very same devices, many of which have no real security protections, are also becoming part of what are called “botnets,” vast networks of tiny computers vulnerable to hijacking by hackers.

  • Developing concepts for escape respirator

    DHS S&T announced the Escape Respirator Challenge, a $250,000 prize competition that seeks new concepts for an escape respirator solution. This challenge invites the innovation community to submit relevant, useable, effective, and feasible concepts that protects the user against aerosolized chemical, biological, and radiological (CBR) hazards and provides oxygen.

  • U.S. must start from scratch with a new nuclear waste strategy: Experts

    The U.S. government has worked for decades and spent tens of billions of dollars in search of a permanent resting place for the nation’s nuclear waste. Some 80,000 tons of highly radioactive spent fuel from commercial nuclear power plants and millions of gallons of high-level nuclear waste from defense programs are stored in pools, dry casks and large tanks at more than seventy-five sites throughout the country. “No single group, institution or governmental organization is incentivized to find a solution,” says one expert.

  • What should we do with nuclear waste?

    The failure to develop a strategy for permanent storage and disposal of this fuel costs Americans billions of dollars a year and jeopardizes the future of nuclear power as a carbon-free source of energy, according to nuclear security expert Rodney C. Ewing. He recommends a new not for profit independent corporation that’s owned and supported by the utilities that operate nuclear power plants. The new organization would deal only with spent fuel from commercial reactors. Defense waste is an entirely different issue and should, at this time, remain the responsibility of the federal government.

  • Inexpensive super-absorbent material offers solution for ocean oil spills

    A super-absorbent material developed by Penn State scientists could dramatically reduce the environmental impact of oil spills on oceans and allow recovered oil to be refined normally. The synthetic material, called i-Petrogel, absorbs more than 40 times its weight in crude oil, and effectively stops the oil from spreading after a spill, according to the researchers.

  • British spy chief warns Russia against covert activity after nerve-agent attack

    The head of Britain’s foreign intelligence service has warned the Kremlin not to underestimate the West following a nerve-agent attack on a retired double agent in England that he attributed to covert Russian activity. Alex Younger, head of the Secret Intelligence Service known as MI6, made the remarks on December 3 in a rare public speech – saying that Russia is in a state of “perpetual confrontation” with the West.

  • Weapons experts: Satellite images confirm Netanyahu’s claims about Iran’s nuclear warehouse

    Satellite images obtained over the summer confirm charges made by Israeli Prime Minister Benjamin Netanyahu in September that Iran had a secret nuclear warehouse in Tehran, a team of weapons inspectors wrote in a paper.

  • Responders provide technical expertise in case of nuclear weapons accidents

    Decades ago, technical experts from the national labs responded in an ad hoc manner to accidents involving nuclear weapons, called “broken arrows.” Thirty-two such accidents have occurred since the 1950s, so the Accident Response Group at Sandia Lab was created about five decades ago to provide technical expertise in assessing and safely resolving nuclear weapons accidents.

  • Quick, precise method for detecting chemical warfare agents

    Sarin is a man-made nerve agent that can spread as a gas or liquid. According to the Center for Disease control, exposure to large doses will over-stimulate glands and muscles, and can lead to loss of consciousness or respiratory failure. Even small doses can cause a long list of distressing and dangerous symptoms. “Low-level nerve agent exposure leads to ambiguous signs and symptoms that cannot be easily discriminated from other conditions, which may result in a delay in treatment and permanent damage,” says an expert. “If trace amounts can be detected quickly, you can prevent permanent damage to human health.”

  • Iran planned to build five 10-Kt bombs by 2003: Nuclear experts

    The Institute for Science and International Security published a paper Tuesday containing new details about Iran’s nuclear weapons program and demanding that the International Atomic Energy Agency ensure that Iran’s nuclear weapons program is “ended in an irretrievable permanent manner.” According to the report, Iranian documents show that Iran had specific plans to build five 10-kiloton nuclear devices by 2003. The plans from the archive show that Iran’s planning for these weapons was very detailed, including expected costs and a timetable.

  • Levitating particles could lift nuclear detective work

    Laser-based ‘optical tweezers’ could levitate uranium and plutonium particles, thus allowing the measurement of nuclear recoil during radioactive decay. This technique, proposed by scientists at Los Alamos National Laboratory, provides a new method for conducting the radioactive particle analysis essential to nuclear forensics.