• New bridge construction technologies to shore up U.S. infrastructure

    See video

    Experts agree that there is an urgent need to construct and repair bridges across the United States. Around 70,000 bridges in the country are considered “structurally deficient” by government standards. New technology could help the United States manage its growing, and aging, infrastructure without breaking the bank or levying high taxes on citizens.

  • NASA engineers building sturdy blue-collar mining robot

    After decades of designing and operating robots full of scientific gear to study other worlds, NASA is working on a prototype that leaves the delicate instruments at home in exchange for a sturdy pair of diggers and the reliability and strength to work all day, every day for years.

  • Extreme rainfall linked to global warming

    A worldwide review of global rainfall data has found that the intensity of the most extreme rainfall events is increasing across the globe as temperatures rise. In the most comprehensive review of changes to extreme rainfall ever undertaken, researchers evaluated the association between extreme rainfall and atmospheric temperatures at more than 8,000 weather gauging stations around the world.

  • Pentagon to bolster U.S cyberwar capabilities

    The Department of Defense is planning an expansion of the U.S. Cyber Command, and the Pentagon plans on recruiting thousands of code crackers, online security professionals, and hackers in order to assemble the nation’s largest cyber army ever.

  • The historical probability of drought

    Droughts can severely limit crop growth, causing yearly losses of around $8 billion in the United States. It may be possible, however, to minimize those losses if farmers can synchronize the growth of crops with periods of time when drought is less likely to occur. Researchers are working to create a reliable “calendar” of seasonal drought patterns that could help farmers optimize crop production by avoiding days prone to drought.

  • Projected U.S. water use to increase as climate warms

    Despite increases in efficiency, water demand in the United States is likely to increase substantially in the future if climate continues to warm, new projections indicate.

  • Maryland counties debate funding stormwater drainage management

    A new tax aimed at property owners could finance the first set of improvements of the drainage works in Salisbury, Maryland since the original system was laid almost a century ago. City leaders have been arguing since 2009 over dedicating a source of funding to stormwater management, when an environmental panel recommended it. In the past, funding for projects like this has been hard to find as other priorities were deemed more important.

  • Using silicon to produce hydrogen on demand

    Super-small particles of silicon react with water to produce hydrogen almost instantaneously, according to researchers. In a series of experiments, the scientists created spherical silicon particles about ten nanometers in diameter. When combined with water, these particles reacted to form silicic acid (a nontoxic byproduct) and hydrogen — a potential source of energy for fuel cells.

  • Part Three: Bechtel and the Y-12 security breach

    With an annual security budget of $150 million, the Y-12 Nuclear Complex at Oakridge, Tennessee, prided itself on its high-tech security system built to protect more than 179 tons of uranium. After Sister Megan Rice, age 82, and two confederates, both senior citizens, too — the three were armed with nothing but wire cutters and flashlights — broke into the Y-12 facility on 28 July 2012, one security guard was fired. Numerous investigations and reports, however, show that last July’s incident was but one in a series of security failures and breaches at nuclear sites under the supervision of the National Nuclear Security Administration (NNSA). In May, Sister Rice and her aging collaborators will stand trial. Bechtel, a major contractor sharing responsibility for the documented security lapses at Y-12, has just received a federal nuclear plant security contract worth more than $22 billion.

  • Grammar rules undermine security of long computer passwords

    When writing or speaking, good grammar helps people make themselves understood. When used to concoct a long computer password, however, grammar — good or bad — provides important hints that can help someone crack that password, researchers at Carnegie Mellon University have demonstrated by devising grammar-aware password cracker.

  • Improving cities by using the notion of “urban metabolism”

    As is the case with organisms, cities need energy, water, and nutrients, and they need to dispose of wastes and byproducts in ways which are viable and sustainable over the long run. This concept of “urban metabolism” is a model for looking systematically at the resources that flow into cities and the wastes and emissions that flow out from them in order better to understand the environmental impacts of cities and to highlight opportunities for efficiencies, improvements, and transformation.

  • Exploring asteroids for commercial metal harvesting

    Deep Space says that in a decade, it will be harvesting asteroids for metals and other building materials, to construct large communications platforms to replace communications satellites, and later solar power stations to beam carbon-free energy to consumers on Earth. “More than 900 new asteroids that pass near Earth are discovered every year. They can be like the Iron Range of Minnesota was for the Detroit car industry last century,” says the company’s CEO.

  • Uranium mining debate divides Virginia

    In Virginia a fight has begun over whether to drill for uranium. Some feel the drilling, which would create about 1,000 jobs and bounty of tax revenue in addition to nuclear fuel, is important for a state whose main industries, such as tobacco and textiles, are failing. Those who oppose the drilling fear the contamination of drinking water in case of an accident, and a stigma from uranium which would deter people and businesses from moving to the area.

  • Keystone pipeline clears another hurdle as Nebraska governor approves project

    On Tuesday, Nebraska governor Dave Heineman notified President Obama that he approved the controversial Keystone XL pipeline to go through the state. This marks a significant step forward in the project, which was delayed by the administration last year.

  • Fracking generates less wastewater per unit of gas, but more overall

    Hydraulically fractured natural gas wells are producing less wastewater per unit of gas recovered than conventional wells would. The scale of fracking operations in the Marcellus shale region – which stretches from New York to Virginia and accounts for about 10 percent of all natural gas produced in the United States today — is so vast, however, that the wastewater it produces threatens to overwhelm the region’s wastewater disposal capacity.