• Plastic lasers shed light on hidden explosives

    Detecting hidden explosives is a difficult task but now researchers in the United Kingdom have developed a new way of detecting them, with a laser sensor capable of detecting molecules of explosives at concentrations of 10 parts per billion (ppb) or less

  • Green decontaminants to breaking down chemical weapons

    New products developed non-toxically to decontaminate nerve gas, mustard gas, radioactive isotopes, and anthrax. The formulas are based on ingredients found in foods, cosmetics, and other consumer products

  • Study explores the use of terahertz sensors

    New work into the ability of nanometallic or plasmonic structures to concentrate light into deep-subwavelength volumes holds a promise of new applications for terahertz sensors for improving optical sources, detectors and modulators for optical interconnections, and for creating biomolecules

  • UN: Iran has fuel for two nuclear weapons

    IAEA says Iran has enough nuclear fuel for two nuclear weapons; the toughly worded IAEA report says that Iran has expanded work at one of its nuclear sites; it also describes, step by step, how inspectors have been denied access to a series of facilities, and how Iran has refused to answer inspectors’ questions on a variety of activities, including what the agency called the “possible existence” of “activities related to the development of a nuclear payload for a missile”

  • A good nose for explosives

    There is a new breed of explosive-sniffing dogs: vapor—wake dogs; genetically bred and trained by Auburn University’s College of Veterinary Medicine, vapor-wake dogs are taught to detect the scent plume of air that comes wafting off a person, such as a suicide bomber, wearing an explosive device

  • Scientists raise health questions about full-body scanners

    A group of scientists from the University of California-San Francisco wrote the White House Office of Science and Technology Policy, saying they fear that the scanners may expose the skin to high doses of X-rays that could increase the risk of cancer and other health problems, particularly among older travelers, pregnant women and people with weak immune systems

  • Bureaucratic hurdles delay NYC dirty bomb defenses

    NYPD says that since last fall, it has been trying to obtain an $8 million federal grant for a radiation detection system which would instantly read data from 4,500 sensors in cop cars across the region to intercept vehicles carrying explosive devices; NYPD is still waiting

  • U.K. firm investigated over sale of dirty bomb material to Iran

    British company sells cobalt aluminate; the material can be used to produce alloys as well as the lethal radioactive isotope cobalt 60; for this reason its sale to nations like North Korea and Iran is tightly limited; cobalt is considered by nuclear experts as more likely to be used in a dirty bomb than in a nuclear warhead

  • The threat of nuclear terrorism against Israel

    Former Israeli deputy national security adviser writes that the threat of nuclear terrorism Israel faces may be more likely to materialize than an Iranian nuclear attack on Israel — should Iran acquire nuclear weapons; he recommends a staunch and uncompromising deterrence policy, based on “retaliate first, no questions asked” — and a study of potential targets of high value to al Qaeda and other terrorist organizations which would be destroyed in a retaliatory attack

  • Russia plans to install explosives detectors in metro

    Russia will install explosive detectors in train stations in major cities; the sophisticated security system will be installed by 2014, and will feature security checkpoints at entrances in all transportation hubs, registration of all passengers, and ID-verified sales of tickets on all means of public transport, including inter-city buses

  • Dolphins, sea lions find explosives, cuff and restrain hostile divers

    The annual Golden Guardian homeland security and disaster preparedness exercise was an occasion for U.S. Navy-trained dolphins and sea lions to demonstrate their superior skills in locating underwater mines and hostile divers; the animals not only detect mines and divers in murky waters — they also demonstrated their dexterity in cuffing and restraining hostile divers while signaling for help from their human counterparts

  • BAE and Portendo join forces on IED detector

    The device aims a laser beam at a particular area suspected to hide an IED; the reflected light is collected by the apparatus and is analyzed using a Raman scattering method, which provides a unique molecular signature which can be compared against an explosives database; Raman spectroscopy has long been thought to hold promise for such applications, but it typically provides a very weak signal; until now

  • South Africa lax attitude to airport security worries FIFA

    South Africa promised FIFA that it would tighten security at airports ahead of the World Cup games which open in three weeks; investigative reporters proved that promise hollow when they managed easily to pass security checks on ten flights — out of the twenty they tried to board — in the country with steak knives, screwdrivers, razors, pairs of scissors, and even syringes in their luggage

  • Iran's nuclear fuel swap is a sham; sanctions may still be imposed

    Following a meeting in Tehran over the weekend of the leaders of Iran, Brazil, and Turkey, Iran said it agreed to send 1,200 kg of low-enriched uranium (LEU) to Turkey in exchange for 120 uranium rods enriched to 20 percent; Turkey and Brazil were quick to argue that there is no reason now for sanctions on Iran; the deal, though, is a sham; Iran has more than a ton of LEU left, and most importantly: it continues aggressively to enrich uranium and it has accelerated work on other components of a nuclear weapon

  • Tiny sensors embedded in cell phones identify, map airborne toxins in real time

    Cell phones are everywhere people are, so University of California-San Diego’s researchers want to turn the devices into chemical sensors; the tiny sensor, a porous flake of silicon, changes color when it interacts with specific chemicals. By manipulating the shape of the pores, the researchers can tune individual spots on the silicon flake to respond to specific chemical traits