• Role of Dams in Reducing Global Flood Risks under Climate Change

    Flood is amongst the costliest natural disasters. Globally, flood risk is projected to increase in the future, driven by climate change and population growth. The role of dams in flood mitigation, previously unaccounted for, was found to decrease by approximately 15 percent the number of people globally exposed to historical once-in-100-year floods, downstream of dams during the twenty-first century.

  • Aging Dams Pose Growing Threat

    By 2050, most people on Earth will live downstream of tens of thousands of large dams built in the twentieth century, many of them already operating at or beyond their design life. Increasingly expensive to maintain, experts foresee a trend to decommissioning dams.

  • The SolarWinds Hack Can Directly Affect Control Systems

    Much of the initial discussion around the SolarWinds cyberattack focused on its impact on the affected information technology (IT) systems. Joe Weiss and Bob Hunter write that this overlooks an equally destructive yet unexamined operational technology (OT) portion of the attack, and much of the OT impact may not be seen for months or longer. Weiss and Hunter note that researchers have long warned about the dangers posed by OT attacks, and that Russian hackers have become extremely adept at control system cyberattacks.

  • Mitigating Coastal Flooding, Erosion and Storm Damage

    Sea level rise and wave-induced flooding during increasingly frequent storm events threaten sustainability of the more than 1,700 Department of Defense (DoD) managed military installations in coastal areas worldwide. Current DoD coastal protection measures, including bulkhead and coastal seawalls, may reflect wave energy, exacerbate flooding, create downstream sediment loss, and restrict water exchange. DARPA’s Reefense program aims to develop novel hybrid biological and engineered reef-mimicking structures to mitigate wave and storm damage and reduce the ecological impact of current coastal protection measures.

     

  • High Rises Made of Timber

    With an increasing demand for a more sustainable alternative for high-rise construction, new points to timber as a sustainable and effective way to make tall, high-density, and renewable buildings. Tall mass-timber buildings are a safe and sustainable alternative for high-rise construction,

  • How Disasters Can Spur Resilience in the Gulf

    Communities in the Gulf of Mexico are all too familiar with the whims of nature and power of the sea. This year’s hurricane season brought power outages, heavy rain, downed trees, property damage, and death and injury. As disasters cascade and compound, progress toward resiliency is made by people working together and using science to decide next steps. 

  • Making Our Infrastructure Safer

    Saurabh Amin, a systems engineer at MIT, focuses on making transportation, electricity, and water infrastructure more resilient against disruptions. “There are a lot of commonalities among these networks — they are built and operated by human actors, but their functionality is governed by physical laws. So, that is what drives me forward,” Amin says.

  • Guidance Will Improve Critical Infrastructure Resilience

    It is easy to understand the importance of our “critical infrastructure,” such as telecommunications, energy, transportation, and emergency services, but what’s often overlooked are the underlying technologies that enable them. DHS S&T is doing something about it.

  • Smart Concrete Could Pave the Way for High-Tech, Cost-Effective Roads

    Of the 614,387 bridges in the U.S., for example, 39% are older than their designed lifetimes, while nearly 10% are structurally deficient, meaning they could begin to break down faster or, worse, be vulnerable to catastrophic failure. The cost to repair and improve nationwide transportation infrastructure ranges from nearly US$190 billion to almost $1 trillion. Repairing U.S. infrastructure costs individual households, on average, about $3,400 every year. Traffic congestion alone is estimated to cost the average driver $1,400 in fuel and time spent commuting, a nationwide tally of more than $160 billion per year.

  • Building European Cities with Wood Would Sequester, Store Half of Cement industry’s Carbon Emissions

    Buildings around us create a whopping one-third of global greenhouse gas emissions – that’s about ten times more than air traffic worldwide. In Europe alone about 190 million square meters of housing space are built each year, mainly in the cities, and the amount is growing quickly at the rate of nearly one percent a year. Slowly increasing the use of wood in European construction could increase the carbon storage of buildings by 420 million CO2 tons over the next 20 years.

  • New Cyber Technologies Protect Utility Energy Delivery Systems

    Researchers are taking new approaches to solve cybersecurity vulnerabilities for utilities and other industries that use process control technologies. These connected devices are used in operational technology settings and tend to be more vulnerable to cyberattacks than information technology equipment. The software identifies and mitigates vulnerabilities in operational technologies.

  • Bridges with Limb-Inspired Architecture Can Withstand Earthquakes, Cut Repair Costs

    Structural damage to any of the nation’s ailing bridges can come with a hefty price of billions of dollars in repairs. New bridge designs promise more damage-resistant structures and, consequently, lower restoration costs. But if these designs haven’t been implemented in the real world, predicting how they can be damaged and what repair strategies should be implemented remain unresolved.

  • Extending Concrete Structure's Lifespan with Carbon Textile

    Researchers have developed an effective structural strengthening method using a noncombustible carbon textile grid and cement mortar, which can double the load-bearing capacities of structurally deficient concrete structures and increase their usable lifespan threefold.

  • U.S. Puts Sanctions on Russian Research Institution Tied to Malware That Targets Industrial Systems

    The United States has placed sanctions on a Russian government research institute connected to the development of computer malware capable of targeting industrial safety systems and causing catastrophic damage.

  • Making Critical Infrastructure Safer as Natural Disasters Increase

    According to the European Union, it costs around €20 billion to repair and maintain transport infrastructure as a direct result of natural hazards. The American Society of Civil Engineers believes neglecting to maintain transport infrastructure could have dire economic consequences, including a loss of 2.5 million jobs and $7 trillion in business sales by 2025 A new roadmap shows the way to more resilient transport networks in a world where natural disasters are increasing, and data is at the heart of the plan.