• Scientist offers better ways to engineer Earth's climate to blunt global warming

    A Canadian scientist suggests two novel geoengineering approaches to limit the effects of climate change on Earth: “levitating:” engineered nano-particles, and the airborne release of sulphuric acid; both ideas are more refined than, and have advantages over, another geoengineering concept developed by geoengineers: mimicking volcanic eruptions by injecting massive amounts of sulphur dioxide gas into the upper atmosphere

  • Germany to extend life of nuclear reactors

    Germany said on Monday that it would extend the life of the country’s 17 nuclear reactors by twelve years on average — the lives of older plants will be extended by eight years and those of newer ones by fourteen years; Chancellor Angela Merkel’s predecessor Gerhard Schroeder had decided to mothball the reactors by around 2020, but Merkel said the extension was necessary to allow more time for renewable energy to become cost effective

  • Small thorium reactors could lead to fossil-fuel-free world within five years

    An argument is made that nuclear reactors which use thorium as an accelerator (hence the technical name: Accelerator Driven Thorium Reactors, or ADTR) could lead to fossil-fuel-free world within five years; thorium is an abundant mineral deposit, with 3 to 5 times more thorium in the world than uranium; more importantly, virtually all of the thorium mined can be used as fuel compared to only 0.7 percent of the uranium recovered in its natural state, this means, in energy terms, that one ton of thorium mined is equivalent to 200 tons of uranium mined, which is equivalent to 3.5 million tons of mined coal; ADTRs also enjoy proliferation resistance advantages compared to other reactor systems

  • Cisco buys Arch Rock, beefing up smart-grid business

    Cisco is beefing up its smart-grid and data center businesses by acquiring San Francisco-based Arch Rock, a maker of a system for collecting information from mesh networks of IP-based wireless sensors, routers, and servers; On Wednesday, Cisco announced a deal with meter maker Itron to develop communications products that use the Internet Protocol, rather than proprietary protocols for sending information from meters back to utilities

  • U.S. nuclear power plants bolster defenses against cyberattacks

    The threat to digital systems at the U.S. nuclear power plants is considerable — especially for new nuclear power facilities that would be built in the United States and throughout the world, as control rooms would employ digital systems to operate the plants; these state-of-the-art instruments and systems make them targets for hackers

  • Dramatic climate change is unpredictable

    Scientists examine two models to explain climate change; one scenario is like a seesaw that has tipped to one side; if sufficient weight is placed on the other side the seesaw will tip — the climate will change from one state to another (an ice age, or warmer climate as is the case today); in the other model, the climate is like a ball in a trench, which represents one climate state; the ball is continuously pushed by chaos-dynamical fluctuations, and the turmoil in the climate system may finally push the ball over into the other trench, which represents a different climate state

  • Coal waste has contaminated water in 34 states

    Coal-waste disposal sites have contaminated drinking and surface water in 34 states; the sites released pollutants such as arsenic, selenium, lead and chromium into water sources on which both humans and farm animals depend; there could be a bigger problem yet: large coal ash-generating states like Alabama, Arizona, Georgia, Indiana, Ohio, Mississippi, Missouri, New Mexico, and Tennessee, require no monitoring by law at coal ash ponds, so the pollution of water by coal ash is not even monitored

  • Are New Orleans' storm defenses strong enough?

    The U.S. Army Corps of Engineers has invested $14.45 billion in bolstering New Orleans’ defenses against storms, and there is a consensus that the city’s protection now is better than they were on 29 August 2005, when Katrina made landfall, and its 8.5-meter surge went on to overpower a poorly constructed and poorly connected levees and flood walls; critics say, though, that the better designed and built levees do not take into account the stronger hurricanes which climate changes causes, and that the best defenses against hurricanes — coastal marshes, wetlands, and barrier islands — are being eroded and lost at an alarming rate as a result of urban development and the Corps’ own engineering approach to harnessing and taming the Mississippi River

  • U.S. military wants to cyber-protect critical infrastructure

    The U.S. military wants to exert more influence over the protection of power grids, transportation networks, and financial network systems because the military relies on these networks to deal with suppliers and these networks could become military targets

  • In 30 years world to be powered mainly by solar and wind energy

    Total oil and natural gas production, which today provides about 60 percent of global energy consumption, is expected to peak about ten to thirty years from now, followed by a rapid decline

  • New Florida museum is glass-covered hurricane-proof fortress

    The new Salvador Dali Museum in St. Petersburg is designed to withstand category 5 hurricanes; the roof is 12-inch thick solid concrete; the walls are even thicker, at eighteen inches; the glass, which makes up big sections of the outside of the museum, can hold up to a category 3 hurricane; if that glass breaks, letting rain, wind, and debris into the facility, the art will still be safe: storm doors will shield the galleries on the third floor, and the vault, which is on the second floor (all of the art is placed on the second and third floors, above the 30-foot storm surge of a category 5 storm)

  • Elevated super bus to solve Beijing's traffic woes

    Beijing and Mexico City vie for the title of the city with the worst traffic jams in the world; Beijing is now looking at an elevated “super bus” as a possible solution; the bus travels on rails and straddles two lanes of traffic, allowing cars to drive under its passenger compartment, which holds up to 1,400 people

  • Railroads do not let HAZMAT teams know what is on train

    Lethal chemicals roll through the backyards of cities and towns without the knowledge of these towns; residents; railroads do not share information about the schedule and contents of HAZMAT cargo with these towns’ emergency services, so the services cannot prepare for catastrophe; if chlorine or ammonia were to escape from a punctured tanker — in an accident or derailment — it would form a toxic cloud; a compromised 90-ton rail car of chlorine could create a plume fifteen miles long by five miles wide; the U.S. railroad industry transported some 75,000 tank cars of toxic inhalants nationwide in 2009

  • China's Three Gorges Dam's showing cracks

    The Three Gorges Dam is China’s largest construction project since the Great Wall; the dam was hailed as an engineering feat that could withstand the worst flood in 100 years, but this year’s torrential rains have severely tested its capacity to control the surging Yangtze

  • Texas police building withstands gun attack, showing value of secure design

    Secure access points and the arrangement of rooms create a buffer between McKinney law enforcement officials and the public; windows sit just above eye level to prevent direct attack; they slope to limit ledges for explosive devices; bulletproof glass protects the lobby, and bullet-resistant liner lies inside the masonry walls