• Little Difference between Managed, Unmanaged Flows of Urban Stormwater

    A new study suggests that expensive efforts to control urban stormwater by investing heavily in green infrastructure — such as water-quality ponds, infiltration basins, porous pavement and riparian plantings — may not have much of an impact.

  • Innovative Air Domain Awareness Technology

    DHS S&T is evaluating an innovative air domain awareness technologies to help protect the airspace along our northern border with Canada.

  • Current Southwest Drought Is a Preview of Things to Come

    Scientists found that the record-low precipitation that kicked off the unprecedented drought parching the U.S. Southwest since 2020 could have been a fluke—just the rare bad luck of natural variability. But the drought would not have reached its current punishing intensity without the extremely high temperatures brought by human-caused global warming.

  • Apps for Popular Smart Home Devices Contain Security Flaws

    As Internet of Things (IoT) devices such as connected locks, motion sensors, security cameras and smart speakers become increasingly ubiquitous in households across the country, their surging popularity means more people are at risk of cyber intrusions. Researchers have found that the smartphone companion applications of 16 popular smart home devices contain “critical cryptographic flaws” that could allow attackers to intercept and modify their traffic.

  • The Effect of Imports of Neodymium Magnets on U.S. National Security

    The Commerce Department’s Bureau of Industry and Security (BIS) has initiated an investigation to determine the effects on U.S. national security from imports of Neodymium-iron-boron (NdFeB) permanent magnets.

  • Small Increases in Greenhouse Gases Will Lead to Decades-Long “Megadroughts” in U.S. Southwest

    Recent NOAA-funded research found that even small additional increases in greenhouse gas emissions will make decades-long “megadroughts” – similar to the drought which has descended on the U.S. southwest nearly twenty years ago — more common.

  • Why It Matters That North Korea Tested a Hypersonic Missile

    Like most ballistic missiles, hypersonic glide vehicle (HGVs) fly at hypersonic speeds, or faster than five times the speed of sound. But HGVs are in theory more difficult to detect and intercept, since they can fly at relatively low altitudes and be maneuvered in flight.

  • U.S. and EU, Wary of China, Forge Alliance on Technology

    With Beijing on the rise as a tech superpower, Brussels and Washington want to close ranks. But divisions loom over the new “Trade and Technology Council” alliance — and previous efforts have a mixed track record.

  • Avoiding Water Bankruptcy in the Drought-Troubled Southwest: What the U.S. and Iran Can Learn from Each Other

    In August, the U.S. government issued its first ever water shortage declaration for the Colorado River, triggering water use restrictions. The fundamental problem is the unchecked growth of water consumption. The Southwest is in an “anthropogenic drought” created by the combination of natural water variability, climate change and human activities that continuously widen the water supply-demand gap.

  • Powerful Clean Energy Available in Our Oceans

    Marine energy—clean power generated from ocean currents, waves, tides, and water temperature changes—is still young, but it has the potential to deliver clean, renewable electricity to coastal communities where nearly 40 percent of Americans live. Before that can happen, scientists need to pinpoint which oceanic arteries host the most reliable energy.

  • Lowering the High Cost of Desalination

    Removing salt and other impurities from sea-, ground- and wastewater could solve the world’s looming freshwater crisis. A suite of analytical tools makes it easier for innovators to identify promising research directions in making saltwater potable.

  • Harnessing Drones, Geophysics and Artificial Intelligence to Remove Land Mines

    Mines and other unexploded ordinance are a worldwide menace; about 100 million devices are thought to be currently scattered across dozens of countries. Aside from putting both wartime and postwar areas off limits to travel, agriculture or anything else, they caused at least 5,500 recorded casualties in 2019; totals in many previous years have been much higher. Some 80 percent of the victims are civilians, and of those, nearly half are children.

  • Changing Climate Increases Need for Water Diplomacy

    The dispute between Ethiopia and its neighbors over the massive Renaissance Dam on the Blue Nile is but one example of how the climate change-driven growing scarcity of water may soon lead countries to engage in what, a decade ago, British intelligence called “water wars.” These growing tensions need to be tackled in new ways.

  • Blocking the Sun to Control Global Warming

    It sounds like something out of a bad science fiction movie — artificially blocking sunlight to keep global warming from overheating the Earth. Nevertheless, a small cadre of researchers is studying the option — so that if humankind ever needs to use it, it will be an informed decision.

  • Science’s Answers to Flood Disaster

    On 14 July 2021, between 60 and 180 mm of rain fell in the Eifel region in just 22 hours - an amount that would otherwise have fallen in several months and which led to catastrophic flooding. The events were far more destructive than existing models had predicted.