Sci-Tech

  • Rising sea levels will be too much, too fast for Florida

    The U.S. National Oceanic and Atmospheric Administration (NOAA) published its assessment of sea level rise in 2012 as part of the National Climate Assessment. Including estimates based on limited and maximum melt of the Greenland and Antarctic ice sheets, it anticipated a raise of 4.1 to 6.6ft (1.25 to 2m) by 2100, reaching 2ft (0.6m) by around 2050 and 3ft (0.9m) by around 2075. This means that by the middle of this century most of the barrier islands of south Florida and the world will be abandoned and the people relocated, while low areas such as Sweetwater and Hialeah bordering the Everglades will be frequently flooded and increasingly difficult places to live. Florida will start to lose its freshwater resources, its infrastructure will begin to fail, and the risk of catastrophic storm surges and hurricane flooding will increase. Florida counties should be planning for their future to determine at what point the costs of maintaining functional infrastructure, insurance, and human health and safety becomes economically impossible. Already, there are areas and properties that will become unlivable within a 30-year mortgage cycle.

  • Turning manure into clean water

    Imagine something that can turn cow manure into clean water, extract nutrients from that water to serve as fertilizer, and help solve the ever-present agricultural problem of manure management. Technology is under development and near commercialization that can do all of that. While turning the manure into clean water makes environmental sense, the researchers are also looking into how this can make good financial sense for farmers. In some cases it could have a significant impact on the long-term viability of the farm.

  • Scientists urge U.S. to do more to detect, prevent use of bioweapons

    Carefully targeted biological weapons could be as dangerous as nuclear weapons, so the United States should invest more resources in developing technologies to detect them, scientists say. What is especially worrisome is that “The advent of modern molecular genetic technologies is making it increasingly feasible to engineer bioweapons,” says one expert. “It’s making people with even moderate skills able to create threats they couldn’t before.” There is another worry: “A high-tech bioweapon could cost only $1 million to build,” the expert adds. “That’s thousands of times cheaper than going nuclear. Iran’s centrifuges alone cost them billions.”

  • Preventing ethnic violence: Full integration or full separation

    What if we could use science to understand, accurately predict, and ultimately avoid, ethnic violence? A new study argues that the key to peace is either completely to integrate or completely separate people based on cultural, linguistic, and ethnic differences.

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  • Foreign graduate enrollment in science and engineering continues to rise

    The number of citizens and permanent residents enrolled in science and engineering (S&E) graduate programs in the United States declined in 2012, while the number of foreign students studying on temporary visas increased, according to new data from the National Science Foundation (NSF).

  • Robot warfare raises ethical question

    Remote-controlled drones could one day give way to automated robot forces. With the increasing use of drones in military operations, it is perhaps only a matter of time before robots replace soldiers. Whether or not fully automated war is on the immediate horizon, researchers say it is not too early to start examining the ethical issues that robot armies raise.

  • Algae biofuel can help meet world energy demand

    Microalgae-based biofuel not only has the potential to quench a sizable chunk of the world’s energy demands, researchers say. Microalgae produces much higher yields of fuel-producing biomass than other traditional fuel feedstocks and it does not compete with food crops. The researchers say that algae yields about 2,500 gallons of biofuel per acre per year. In contrast, soybeans yield approximately forty-eight gallons; corn about eighteen gallons.

  • Dramatic drop in Central Valley wintertime fog threatens California’s agricultural industry

    California’s winter tule fog — hated by drivers, but needed by fruit and nut trees — has declined dramatically over the past three decades, raising a red flag for the state’s multibillion dollar agricultural industry, according to researchers at UC Berkeley. Many crops go through a necessary winter dormant period brought on and maintained by colder temperatures. Tule fog, a thick ground fog that descends upon the state’s Central Valley between late fall and early spring, helps contribute to this winter chill. The findings have implications for the entire country since many of these California crops account for 95 percent of U.S. production.

  • Power plant emission detection by satellites verified

    Air pollution and greenhouse gas emissions from two coal-fired power plants in the Four Corners area of northwest New Mexico, the largest point source of pollution in America, were measured remotely by a Los Alamos National Laboratory team. The study is the first to show that space-based techniques can successfully verify international regulations on fossil energy emissions.

  • DARPA Demo Day 2014: Preserving, expanding U.S. technological superiority

    Information technology (IT) is a key enabler for the Defense Department (DoD) and has been a focus area for DARPA since its founding in 1958. DARPA’s contributions to modern IT are well-known — perhaps most notably, DARPA is generally credited with developing and prototyping the technology for what is now known as the Internet. While the DoD currently enjoys IT superiority, that superiority cannot be taken for granted. On Wednesday, DARPA held the largest-ever Pentagon event to showcases more than 100 projects aiming to be game-changing improvements to U.S. national security.

  • Floating solar power plants offer many benefits

    Water-based solar plants are at least 50 percent more efficient than a land-based solar power system.The water on which the plant floats helps extending the life of the photovoltaic panels, meaning greater efficiency and performance from the solar panel system, and the plant also prevents nearly 90 percent of the evaporation for the surface area that it covers, an important benefit in dry climates.

  • Wireless camera network offers new possibilities for security systems

    Advances in computer technology are opening up new possibilities for surveillance cameras and environmental video monitoring systems. A graduate engineering student used off-the-shelf components to build a prototype device for a solar-powered wireless network of smart cameras with potential applications in security systems and wildlife monitoring.

  • Pumping Central Valley’s ground water increases number of California’s earthquakes

    Scientists have offered a new theory explaining the steady increase in the number of small earthquakes in parts of Central California. They say that the quakes are partly due to the pumping of groundwater. Groundwater is heavy, and depresses the Earth’s upper crust like a weight. Without that weight, the earth springs upward and the change in pressure can trigger more small earthquakes.

  • New technology tests ammo while saving joints

    Firing and testing thousands of rounds of ammunition weekly can challenge the human body — even ones in top physical condition — causing debilitating stress injuries and chronic nerve and joint pain. DHS Science and Technology Directorate (S&T), with the help of agents from ICE Office of Firearms and Tactical Programs (OFTP) Armory Operations Branch (AOB), has taken an important step forward in reducing or eliminating these injuries by developing of the “Virtual Shooter.”

  • Abundant shale gas, by itself, not likely to alter climate projections

    While natural gas can reduce greenhouse emissions when it is substituted for higher-emission energy sources, abundant shale gas is not likely substantially to alter total emissions without policies targeted at greenhouse gas reduction, a new study finds. If natural gas is abundant and less expensive, it will encourage greater natural gas consumption and less of fuels such as coal, renewables and nuclear power. The net effect on the climate will depend on whether the greenhouse emissions from natural gas — including carbon dioxide and methane — are lower or higher than emissions avoided by reducing the use of those other energy sources.