• U.S. Congress holds hearings on geoengineering

    Geoengineering — the effort to design systems which would change the world’s climate — was once a fringe phenomenon; it has been moving into the mainstream, though, as more and more scientists are growing increasingly concerned that, even if we commit to cutting emissions drastically, we have already waited too long, and that by the time we actually reduce emissions, enough greenhouse gases will have accumulated to cause serious climate disasters

  • Day of Americans serving as mobile chemicals sensors nears

    NASA Ames scientists demonstrate cell phone chemical sensor; the prototype device, designed to be plugged in to an iPhone, collects sensor data and sends it to another phone or a computer via telephone communication network or Wi-Fi

  • Iran tested advanced nuclear warhead design

    The “two-point implosion” is one of the most guarded secrets in nuclear weapons states; yet Iranian engineers, in what Western nuclear experts describe as a breakthrough, has tested such a design, which much be described as a giant leap in acquiring nuclear weapons

  • New communication system to help protect soldiers in the field

    The new technology will use arrays of highly specialized antennas that could be worn by combat troops to provide covert short-range person-to-person battleground communications; the technology will lead to advanced wireless systems that would enable small squads of soldiers to share real-time video, covert surveillance data and tactical information with each other via helmet-mounted visors

  • First winner in space elevator competition

    The contest requires their machines to climb 2,953 feet (nearly 1 kilometer) up a cable slung beneath a helicopter hovering nearly a mile high; the vehicle from the Kansas City-based LaserMotive zipped up to the top in just over four minutes and immediately repeated the feat, qualifying for at least a $900,000 second-place prize

  • First space hotel taking bookings for 2012 opening

    Space tourism is nearing, with the first space hotel set to open in 2012; the Barcelona-based company is already taking bookings; the cost of three nights (plus a two-month training course on a Caribbean island beforehand) will be $4.4 million per guest

  • Robot fish could monitor water quality

    Michigan State University researchers develop robots that use advanced materials to swim like fish to probe underwater environments; robotic fish — perhaps schools of them operating autonomously for months — could give researchers far more precise data on aquatic conditions, and the quality — and security — of the water supply

  • Space elevator competition to test alternatives to rocketry

    The space elevator idea envisions replacing rockets with electrically powered vehicles which would run up and down a cable anchored to a ground structure and extending thousands of miles up to a mass in geosynchronous orbit — the kind of orbit communications satellites are placed in to stay over a fixed spot on the Earth; space elevator competition being held this week in the the Mojave Desert

  • DHS in trials of next generation multiband radio

    Emergency communication interoperability is getting closer as the day of the single-band radio is coming to an end; DHS’ S&T is testing a multiband radio for emergency services

  • New technology to boost food security

    A scientist in the Philippines develops a new method for keeping food fresh; brine-immersion freezing, or BIF, allows fish and meat can be stored for two to three days in styrofoam boxes without using ice, and up to six months when stored in freezers or chillers

  • Day of quantum communications in the theater nears

    The challenges so far with free space optical links, which use fibre optics for transmission, have been the turbulence or distortions from temperature differences that cause motion or wind in the atmosphere; researchers have established an optical link without distortion in test situations at a distance of 35km in stationary and flight situations

  • New high-precision chemical detector to be commercialized

    A start-up launched by the University of Delaware is preparing to commercialize a high-precision detector — a planar-array infrared spectrograph — that can identify biological and chemical agents in solids, liquids, and gases present at low levels in less than a second

  • DARPA announces a $40,000 red-balloon Network Challenge

    To celebrate the Internet’s 40th anniversary, DARPA will moor ten 8-foot red weather balloons across the continental United States during the daylight hours of 5 December; the first individual — or group — to identify the location of the balloon will receive $40,000

  • Questions raised about Obama's smart grid funding

    For the smart grid project to succeed, the business case for it needs to be widely accepted by the stakeholders involved (skeptics would say that if efficiency-mindedness was at the top of the agenda in utility boardrooms and state regulatory agencies, then no federal stimulus money would be needed to install these kinds of technologies); also: the Obama plan envisions a joint public-private smart grid expenditure of $8.1 billion — the government’s $3.4 billion is being matched by $4.7 billion in private investment; a recent analysis of what it would take to build a unified national smart grid put the tab for such a grid at $400 billion

  • The brief

    Smart grid technologies may themselves introduce new problems, such as increasing the vulnerability to cyber attack, as power grid resources become increasingly linked to the Internet