• Real-time forecast of Hurricane Sandy accurately predicted storm’s track, intensity

    A real-time hurricane analysis and prediction system that effectively incorporates airborne Doppler radar information may accurately track the path, intensity, and wind force in a hurricane. This system also can identify the sources of forecast uncertainty.

  • Volcanic eruptions explain recent warming hiatus

    Volcanic eruptions in the early part of the twenty-first century have cooled the planet, according to a study led by Lawrence Livermore National Laboratory. This cooling has partly offset the warming produced by greenhouse gases, explaining why, despite continuing increases in atmospheric levels of greenhouse gases, and in the total heat content of the ocean, global-mean temperatures at the surface of the planet and in the troposphere (the lowest portion of the Earth’s atmosphere) have shown relatively little warming since 1998. Scientists note that human-induced – that is, greenhouse gasses emissions-related — change typically causes the troposphere to warm and the stratosphere to cool. In contrast, large volcanic eruptions cool the troposphere and warm the stratosphere.

  • Unsupervised robotic construction crew to build flood defenses

    See video

    On the plains of Namibia, millions of tiny termites are building a mound of soil — an 8-foot-tall “lung” for their underground nest. They do so without a supervisor, foreman, or CEO to tell them what to do. During a year of construction, many termites will live and die, wind and rain will erode the structure, and yet the colony’s life-sustaining project will continue. Harvard researchers, inspired by the termites’ resilience and collective intelligence, have created an autonomous robotic construction crew. The system needs no supervisor, no eye in the sky, and no communication: just simple robots — any number of robots — that cooperate by modifying their environment. In the future, similar robots could lay sandbags in advance of a flood, or perform simple construction tasks on Mars.

  • Protecting the grid from geomagnetic storms

    A geomagnetic storm disrupts the Earth’s magnetic field by producing geomagnetically induced currents (GICs) on the Earth’s surface, which can enter the power grid at transformer stations and move along power lines, disrupting normal operations. A geomagnetic storm would reach Earth between fourteen and ninety-six hours, leaving little time to safeguard critical infrastructure. U.S. regulators are drafting reliability standards and procedures to protect the U.S. power grid from such storms.

  • Limitations and side effects of large-scale geoengineering

    Despite international agreements on climate protection and political declarations of intent, global greenhouse gas emissions have not decreased, and with the accelerating industrialization of emerging markets, are not likely to any time soon. Therefore, large-scale methods – called geoengineering or climate engineering — artificially to slow down global warming are increasingly being discussed. Scientists say that the long-term consequences and side effects of these methods have not been adequately studied.

  • Testing vibration caused by high-speed trains

    New high-speed train lines are likely to be built as cities grow, and one problem planners have foreseen is vibrations in the ground caused by trains passing at speed. While these vibrations would probably be too small to damage buildings, they could disrupt the work of buildings such as a hospital by affecting sensitive equipment. Scientists have developed a new model to predict how much a new high-speed railway would shake the ground around it, and the effect this could have on those living near the line.

  • Damage to coastal infrastructure from storm surges, floods may reach 9% of global GDP

    Damage to the world’s coastal infrastructure as a result of flooding, sea level rise, and coastline development is expected to cost as much as 9 percent of global Gross Domestic Product (GDP) according to a new report published in the Proceedings of the National Academy of Sciences(PNAS).

  • Out-of-control giant satellite poses “Gravity”-style space debris threat

    Envisat, a £1.8 billion, 9-meter-long behemoth, was launched by the European Space Agency (ESA) in 2002, and used ten sophisticated sensors to observe and monitor Earth’s land, atmosphere, oceans and ice caps. ESA, however, lost contact with the satellite in April 2012 — and declared the end of the mission soon after. The satellite now orbits the Earth free from human control at an altitude of 790 km — where the amount of space debris around the planet is greatest. In a paper, University of Leicester students point out that unless it is brought under control, Envisat could potentially pose a threat similar to the events which plague Sandra Bullock in the Oscar-nominated sci-fi thriller “Gravity.”

  • Skeptics doubt voluntary Cybersecurity Framework will achieve its goal

    The Framework for Improving Critical Infrastructure Cybersecurity, developedby NIST following Executive Order 13636to promote cybersecurity, has been received with both support and skepticism from critical infrastructure industries. The 41-page document, put together by industry and government experts, offers guidelines on cybersecurity standards and best practices to critical infrastructure firms. It says its role is to be a complement to industries’ existing risk management practices.Skepticssay that without incentives, legislation, or enforcement, the guidelines will not be adopted.”The marketplace will punish any company that implements anything that could be considered excessive security, because it will increase their costs,” says an industry insider.

  • Y-12 protestors receive lengthy prison terms from judge

    Judge Amul R. Thapar sentenced three peace protestors who breached the Y-12 Nuclear Security Complex at Y-12 National Security Complexat Oak Ridge, Tennessee, to lengthy sentences in federal prison. Judge Thapar stated that he did not believe the three defendants — Sister Megan Rice, 84. Michael R. Walli, 65, and Greg Boertje-Obed, 59 — were terrorists but, nevertheless, they had broken the law and must serve sentences which demonstrated that the law should be taken seriously.To reach the Highly Enriched Uranium Materials Facility (HEUMF) building at Y-12, the three peace activists, led by the octogenarian Sister Rice, cut through four fences and escaped detection by security guards authorized to use lethal force, and by ground sensors, sophisticated surveillance cameras, and other security equipment described by Y-12 as “…the most stringent security system in the world.”

  • Sensors would spot structural weaknesses in bridges, stadiums before they collapse

    A team of engineers, with a grant of $1 million from the government of Qatar, will work to develop a wireless sensor network which will monitor vibrations, sagging, and stresses to assess a structure’s ability to carry its load. The proposed system would not only detect damage after it occurs, but would aim to predict it before it takes place.

  • Studying the 2011 Mississippi and Ohio rivers flood for better flood preparedness

    In May 2011, when the U.S. Army Corps of Engineers used explosives to breach a levee south of Cairo, Illinois, diverting the rising waters of the Mississippi and Ohio rivers to prevent flooding in the town, about 130,000 acres of Missouri farmland were inundated. It was the largest flood of the lower Mississippi ever recorded. Researchers took advantage of this “once-in-a-scientific-lifetime” occurrence to study the damage in order to demonstrate that landscape vulnerabilities can be mapped ahead of time to help communities prepare for extreme flooding.

  • Implementing solar radiation management, then stopping, would accelerate climate change

    One geoengineering approach to slowing or reversing climate change is solar radiation management, which envisions spraying tiny sulfur-based particles into the upper atmosphere to reflect sunlight. This is similar to what happens after a major volcanic eruption, and many experts believe the technique is economically and technically feasible. Continuous implementation over years, however, depends on technical functioning, continuous funding, bureaucratic agreement, and lack of negative side effects. In a new study, researchers say that spraying reflective particles into the atmosphere to reflect sunlight and then stopping it could exacerbate the problem of climate change.

  • Fashioning an effective disaster mitigation approach in an uncertain world

    The dramatic images of natural disasters show that nature, not the people preparing for hazards, often wins the high-stakes game of chance. Sometimes nature surprises us when an earthquake, hurricane, or flood is bigger or has greater effects than expected. In other cases, nature outsmarts us, doing great damage despite expensive mitigation measures or causing us to divert limited resources to mitigate hazards that are overestimated. Much of the problem comes from the fact that formulating effective natural hazard policy involves combining science, economics, and risk analysis to analyze a problem and explore costs and benefits of different options in situations where the future is very uncertain.

  • Power cuts will be more common in the future

    U.S. figures show that since 2007, commercial and domestic air-conditioning alone consumed 484billion kilowatt hours of electricity — not much more than the country’s total energy consumption in the mid-1950s. The American Society of Civil Engineers (ASCE) has warned that U.S. generation systems could collapse by 2020 without $100 billion of new investment in power stations. Demands of high-powered electrical appliances, a growing world population, and inadequate investment in the power sector will create more frequent power blackouts in Western societies.