• California already has upward of 1,000 dams that provide water supply, flood control, and hydropower, but California growing water shortages; last month Governor Arnold Schwarzenegger insisted he would not sign off on any major overhaul of the water system without money for new dams and reservoirs

  • Researchers substitute an atom of gallium for an aluminum atom in the center of an aluminum oxide cluster, creating a more effective process for removing bacterial, viral, and other organic and inorganic contaminants from river water destined for human consumption, and from wastewater treatment plants prior to returning water to the environment

  • New study says there is a one-in-two chance of fully depleting all of the Colorado River reservoir storage system by mid-century assuming current management practices continue on course

  • Land down under

    Lake Wivenhoe, which spans an area about the size of the city of Brisbane, supplies water to 1.5 million residents in south-east Queensland; CSIRO deploys its FLECK smart wireless sensor network technology to monitor water quality

  • Using disinfectants to keep water drinkable was one of the major achievements of the twentieth century; a recent study now shows that the chemicals used to purify the water we drink and use in swimming pools react with organic material in the water yielding toxic consequences

  • Researchers develop nano-sized laboratory, complete with a microscopic workbench, to measure water quality in real time; breakthrough will help keep water safe from pollution and bioterrorist threats

  • New self-forming, self-healing wireless mesh sensor network can detect railway embankment landslides, humidity in art museums, water quality in water treatment facilities — and has military and security applications such as a perimeter network that can detect intrusion through breaking a light beam, or triggering a tripwire, or proximity sensor

  • Civil engineers association assigns a D grade to U.S. infrastructure, and says $2.2 trillion in repairs needed

  • On the water front

    Researchers develop hydrogel material that can detect and remove contaminants in water; the hydrogel shrinks as it absorbs heavy metal pollutants, signaling the presence of cadmium and other toxic ions, even as it absorbs them from the contaminated water

  • Lists

    U.S. citizens may upset to learn — should be upset to learn — that their drinking water contain disturbing amounts of pharmaceuticals and hormonally active chemicals; the concentrations are small, for now, but individuals with some health conditions should consult their physicians

  • The American Chemical Society wants to do its share to bolster societal safety — and a new series of an the organization-sponsored podcasts describe an array of technologies to help assure personal safety and national security

  • Each year, an influx of nutrients — mainly nitrogen — which come from fertilizers flushed out of the Mississippi basin creates dead zones in the Gulf of Mexico — zones where there is not enough oxygen to sustain life; the summer’s Midwest floods flush record levels of nutrients into the Gulf, creating a dead zone the size of New Jersey

  • On the water front

    Water-attracting materials seem to repel impurities, thus leaving a layer of pure water near their surface; making tubes from these particle-excluding materials would allow for a new way to purify water — if, for now, in relatively small quantities

  • On the water front

    Scottish researchers develop a method for turning farm-yard waster into water fit to bathe in; new method also prevents loss of contaminants to rivers and lakes, where they may be detrimental to animal or human health

  • Climate change could threaten U.S. security in the next twenty years by causing political instability, mass movements of refugees, terrorism, or conflicts over water and other resources in specific countries

  • On the water front

    University of Massachusetts researcher develops new mercury detector which detects minute quantities of mercury even in the presence of other metals

  • On the water front

    From AD 800 to 1250 the North American continent suffered from an exceedingly dry period; experts build climate model which shows that the warming of the oceans may lead to another long parched period — what they call “megadrought”

  • On the water front

    Viral hemorrhagic septicemia (VHS) has caused massive declines in population among fish species, ranging from walleyes to salmon, in all of the Great Lakes except Superior; new water treatment method could help keep a deadly fish disease out of Lake Superior

  • On the water front

    NASA develops nanotechnology-based biosensor that can detect trace amounts of specific bacteria, viruses, and parasites; New York-based Early Warning, Inc. will initially market the sensor to water treatment facilities, food and beverage companies, industrial plants, hospitals, and airlines

  • On the water front

    Boris Johnson has just been elected mayor of London, and one of his first acts in office was to withdraw of the legal challenge launched by his predecessor, Ken Livingstone, against a desalination plant to be built on the banks of the Thames; the plant will be the first in London to take water from the tidal stretch of the Thames, removing salt from the water