• Expert urges broad reforms in managing California's water

    Most threatening to California’s water situation is the vulnerability of the hub of the state’s fresh water system, the Sacramento-San Joaquin delta, which drains water from the northern Sierra mountains; over the past century, farmers have built a network of more than 1,700 kilometers of levees to protect farmland in the delta from floodwaters; those levees are weak and vulnerable to earthquakes, seasonal floods, and rising waters expected as a result of climate change; the failure of even a fraction of the levees would draw massive amounts of saltwater in from San Francisco Bay, forcing the state to shut off the pumps, cutting off water supplies for many months, and costing the state’s economy billions of dollars

  • Ancient catastrophic drought a warning about current warming trends

    Extreme megadrought in Afro-Asian region likely had consequences for Paleolithic cultures; the records show that one of the most widespread and intense droughts of the last 50,000 years or more struck Africa and Southern Asia 17,000 to 16,000 years ago; the “H1 megadrought” was one of the most severe climate trials ever faced by anatomically modern humans; Africa’s Lake Victoria, now the world’s largest tropical lake, dried out, as did Lake Tana in Ethiopia, and Lake Van in Turkey; the Nile, Congo, and other major rivers shriveled

  • Insider threat problem topic of a GovSec panel

    A recent batch of leaked cables from the State Department reveals concerted efforts by terrorist organizations to obtain WMDs and the danger that “insider threats” pose at facilities that house radioactive materials; in September 2009 two employees at the Rossing Uranium Mine in Namibia smuggled nearly half a ton of yellowcake out of the facility; the pair was eventually caught, but 550 pounds were not intercepted and have gone missing; another cable expressed fears that an employee working in one of Pakistan’s nuclear facilities could “gradually smuggle enough material out to eventually make a weapon”; these incidents are but two examples of the growing danger insiders, motivated by money or ideology, pose

  • DHS information officers discuss the future of technology at AFCEA

    The senior technology officials of several DHS agencies gathered for a roundtable discussion at the AFCEA Homeland Security Conference in Washington, D.C. to outline their priorities, challenges, and plans for procuring technology and implementing capabilities at their respective departments; information officers from TSA, the U.S Coast Guard, the National Protection and Programs Directorate, and Citizen and Immigration Services were present; each official expressed similar plans to increase mobile access to data, digitize records, establish national databases, and streamline the flow of information; officials believe these remotely accessible databases can also help reduce costs and enhance customer service; the officials also noted the difficulty in hiring qualified personnel with cyber security skills

  • NZ earthquake illustrates risks for U.S. west coast

    The recent 6.3 magnitude earthquake in Christchurch, New Zealand, killed many more people and caused far more damage than the September 2010 7.1 magnitude earthquake which struck the same area; the reason: even though this earthquake was weaker than last year’s event, it was much shallower; was situated directly under Christchurch; hit during the lunch hour when more people were exposed to damage; and shook sediments that were prone to “liquefaction,” which can magnify the damage done by the ground shaking; scientists say the same description nicely fits many major cities and towns in Washington, Oregon, California, and British Columbia

  • Common clam to help clean oil-filled waters

    Clams are bottom-dwelling filter feeders, obtaining nutrients by filtering the water around them; researchers at Southeastern Louisiana University are studying the lowly Rangia clam to determine whether the organism can contribute to helping clean oil-polluted waters

  • Danger building up behind aging, vulnerable dams

    Of the U.S. 85,000 dams, more than 4,400 are considered susceptible to failure; a 2009 report put the cost of fixing the most critical dams — where failure could cause loss of life — at $16 billion over twelve years, with the total cost of rehabilitating all dams at $51 billion; those figures do not include dams among the approximately 3,000 that are owned by the federal government; the Army Corps of Engineers, for example, says that more than 300 of the roughly 700 dams it is responsible for need safety-related repairs, and estimates the total fix-up bill at about $20 billion

  • Satellite system to provide earlier earthquake warnings

    British and Russian scientists are planning a satellite system that will monitor seismic activity from space in the hope of one day predicting the occurrence of earthquakes and volcanic eruptions.
    The TwinSat project will put one micro-sized and one nano-sized satellite into low earth orbit some 400 kilometers apart, which will work in unison to collect and interpret electromagnetic signatures from the ground

  • Oil giants struggle to find more oil

    Last week Exxon Mobil Corp’s annual financial report showed that the world’s largest oil company was struggling to find more oil; the report revealed that Exxon had only replaced 95 percent of the oil that it pumped out of the ground over the last decade; Exxon now holds more natural gas reserves than oil for future production; the company has replaced its natural gas reserves at higher rates than oil; in recent years large western oil companies have found that most of the accessible oil fields have been tapped, while new regions have been difficult to access both technically and politically; in 2010 Chevron announced that it had only replaced one barrel for every four it produced and Royal Dutch Shell PLC recently announced that next year it will produce more gas than oil for the first time in its company’s 104-year history

  • Haiti's quake damage yields better building codes

    In the aftermath of the 7.0 magnitude earthquake that shook Haiti last year and killed more than 300,000 people, University of Arizona researchers descended upon the country’s capital to study buildings that survived the quake; researchers documented damaged buildings to develop a sophisticated three dimensional model; they are working to develop stricter building codes to ensure that buildings can withstand earthquakes in the future; their focus is on designing low-cost easy to implement localized solutions; buildings that were not built to withstand earthquakes were the primary cause of death in the disaster

  • California Delta plan released, canal recommendation missing

    Last week the Delta Stewardship Council released the first draft of its proposed plan to resolve safety concerns over California’s Sacramento-San Joaquin River Delta, one of the state’s most critical pieces of infrastructure; the Delta accounts for 76 percent of the state’s fresh water supply; engineers, residents, and politicians fear that the aging levees along the Delta will break in the event of an earthquake; missing from the initial draft is a recommendation for a peripheral canal, a controversial proposal that has sparked fierce debate; more details will be added to the plan in subsequent drafts after public meetings are held to debate its contents; the final draft of the plan is scheduled to be completed and adopted in November 2011

  • States challenge federal policy on nuclear waste storage

    The search for a permanent solution to the storage of nuclear waste continues as three states sued the Nuclear Regulatory Commission (NRC) last week over its new policy on spent fuel; in December NRC issued a new policy stating that nuclear waste could be safely stored at a power plant for sixty years after a reactor went out of service; the issue of nuclear storage has become increasingly contentious after the Obama administration ruled out the use of a Department of Energy storage site in Nevada in 2009; nuclear plants have been forced to turn temporary on-site storage into long-term facilities as no permanent site has been built; the Obama administration launched a commission to find alternatives for the permanent nuclear storage site in Nevada that it cancelled

  • Industry wants current safety law extended rather than see it toughened

    Before the House Homeland Security committee, Timothy J. Scott, the chief security officer of Dow Chemical Co., urged Congress permanently to reauthorize the Chemical Facility Anti-Terrorism Standards (CFATS) bill; under CFATS chemical facilities are required to address a range of critical security concerns including protecting facilities against attacks and preventing the theft of dangerous chemicals; currently, more than 35,000 facilities that use or store chemicals are required to meet CFATS regulations; DHS has worked with facility owners to mitigate risks with custom developed security plans at more than 2,000 “high risk” sites

  • Safer wind turbine developed to minimize DHS objections

    In the past wind turbine farms have faced opposition from the Department of Defense (DOD) and the Federal Aviation Administration (FAA) due to the interference they cause radar systems; wind turbines distort radars causing air traffic controllers to see them as storms and the interference generated by the wind farms can even cause planes to disappear completely from radar screens; a new wind turbine model will help minimize the impact that wind turbine fields have on radars; the model will be used by various government agencies including DHS, DOD, and the Department of Energy to decide whether a proposed wind farm can move forward

  • Rising seas will affect major U.S. coastal cities by 2100

    The Gulf and southern Atlantic coasts will be particularly hard hit by rising sea levels, research predicts. Miami, New Orleans, Tampa, Florida, and Virginia Beach, Virginia could lose more than 10 percent of their land area by 2100