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    Last update: December 22, 2009

    +STS-129 Ascent Video Highlights
      An anonymous reader sends in this link to a video of 12-1/2 minutes of Space Shuttle pr0n. The people at the Johnson Space Center put together this video of the ascent of STS-129 using multiple imagery assets — ground, air, booster, and the shuttle itself. The booster's-eye view of splashdown and immersion is something you don't see every day. As a bonus, another anonymous reader shared a beautiful photo of the shuttle flying over rugged terrain after it separated from the ISS last week.Read more of this storyat Slashdot.

    +Modeling the Economy As a Physics Problem
      University of Utah physicist Tim Garrett has published a study that approaches the economy and its relation to global warming as a physics problem — and comes to some controversial conclusions: that rising carbon dioxide emissions cannot be stabilized unless the world's economy collapses or society builds the equivalent of one new nuclear power plant each day. The study was panned by economists and was rejected by several journals before its acceptance in the journal Climatic Change. "[Garrett discovered that] Throughout history, a simple physical constant... links global energy use to the world's accumulated economic productivity, adjusted for inflation. So it isn't necessary to consider population growth and standard of living in predicting society's future energy consumption and resulting carbon dioxide emissions. ... 'I'm not an economist, and I am approaching the economy as a physics problem,' Garrett says. 'I end up with a global economic growth model different than they have.' Garrett treats civilization like a 'heat engine' that 'consumes energy and does "work" in the form of economic production, which then spurs it to consume more energy,' he says. That constant is 9.7 (plus or minus 0.3) milliwatts per inflation-adjusted 1990 dollar. So if you look at economic and energy production at any specific time in history, 'each inflation-adjusted 1990 dollar would be supported by 9.7 milliwatts of primary energy consumption,' Garrett says. ... Perhaps the most provocative implication of Garrett's theory is that conserving energy doesn't reduce energy use, but spurs economic growth and more energy use."Read more of this storyat Slashdot.

    +Tapering Waveguide Captures a Rainbow
      SubComdTaco passes along news of researchers in the US who have trapped a rainbow in a tapering waveguide. The research is described (PDF) on the arXiv. "In 2007, Ortwin Hess of the University of Surrey in Guildford, UK, and colleagues proposed a technique to trap light inside a tapering waveguide [made of metamaterials]... The idea is that as the waveguide tapers, the components of the light are made to stop in turn at ever narrower points. That's because any given component of the light cannot pass through an opening that's smaller than its wavelength. This leads to a 'trapped rainbow.' ... Now Vera Smolyaninova of Towson University in Baltimore, Maryland, and colleagues have used a convex lens to create the tapered waveguide and trap a rainbow of light. They coated one side of a 4.5-mm-diameter lens with a gold film..., and laid the lens — gold-side down — on a flat glass slide which was also coated with film of gold. Viewed side-on, the space between the curved lens and the flat slide was a layer of air that narrowed to zero thickness where the lens touched the slide — essentially a tapered waveguide. When they shone a multi-wavelength laser beam at the... gilded waveguide, a trapped rainbow formed inside. This could be seen as a series of colored rings when the lens was viewed from above with a microscope: the visible light leaked through the thin gold film."Read more of this storyat Slashdot.

    +Herschel Spectroscopy of Future Supernova
      davecl writes "ESA's Herschel Space Telescope has released its first spectroscopic results. These include observations of VYCMa, a star 50 times as massive as the sun and soon to become a supernova, as well a nearby galaxy, more distant colliding starburst galaxies and a comet in our own solar system. The spectra show more lines than have ever been seen in these objects in the far-infrared and will allow astronomers to work out the detailed chemistry and physics behind star and planet formation as well as the last stages of stellar evolution before VYCMa's eventual collapse into a supernova. More coverage is available at the Herschel Mission Blog, which I run."Read more of this storyat Slashdot.

    +Algae Could Be the Key To Ultra-Thin Batteries
      MikeChino writes "Algae is often touted as the next big thing in biofuels, but the slimy stuff could also be the key to paper-thin biodegradable batteries, according to researchers at Uppsala University in Sweden. Uppsala researcher Maria Stromme and her team has found that the smelly algae species that clumps on beaches, known as Cladophora, can also be used to make a type of cellulose that has 100 times the surface area of cellulose found in paper. That means it can hold enough conducting polymers to effectively recharge and hold electricity for long amounts of time. Eventually, the bio batteries could compete with commercial lithium-ion batteries."Read more of this storyat Slashdot.

    +Cassini Captures Saturn's Northern Lights
      al0ha writes "In the first video showing the auroras above the northern latitudes of Saturn, Cassini has spotted the tallest known 'northern lights' in the solar system, flickering in shape and brightness high above the ringed planet. The new video reveals changes in Saturn's aurora every few minutes, in high resolution, with three dimensions. The images show a previously unseen vertical profile to the auroras, which ripple in the video like tall curtains. These curtains reach more than 1,200 kilometers (750 miles) above the edge of the planet's northern hemisphere."Read more of this storyat Slashdot.

    +New Evidence For Ancient Life On Mars
      siddesu writes in with "compelling" new data that chemical and fossil evidence of ancient microbial life on Mars was carried to Earth in a Martian meteorite. The finding is being highlighted by the same NASA team who made the initial discovery 13 years ago. Spaceflight Now has more details of the analysis.Read more of this storyat Slashdot.

    +Cancer Vaccine That Mimics Lymph Node
      SubComdTaco writes "Harvard has announced their approach towards an implantable cancer vaccine (press release here). To anyone familiar with how the immune system works, this appears to be a synthetic lymph node, an intriguing bit of biomimicry. From the Science Daily article: 'A cancer vaccine carried into the body on a carefully engineered, fingernail-sized implant is the first to successfully eliminate tumors in mammals, scientists recently reported in the journal Science Translational Medicine. The new approach, pioneered by bioengineers and immunologists at Harvard University, uses plastic disks impregnated with tumor-specific antigens and implanted under the skin to reprogram the mammalian immune system to attack tumors. The new paper describes the use of such implants to eradicate melanoma tumors in mice. ... The slender implants... are 8.5 millimeters in diameter and made of an FDA-approved biodegradable polymer. Ninety percent air, the disks are highly permeable to immune cells and release cytokines, powerful recruiters of immune-system messengers called dendritic cells. These cells enter an implant's pores, where they are exposed to antigens specific to the type of tumor being targeted. The dendritic cells then report to nearby lymph nodes, where they direct the immune system's T cells to hunt down and kill tumor cells.'"Read more of this storyat Slashdot.

    +Engaging With Climate Skeptics
      In the wake of the CRU "climategate" leak, reader Geoffrey.landis sends along a New York Times blog profile of Judith Curry, a climate scientist at Georgia Tech. "Curry — unlike many climate scientists — does not simply dismiss the arguments of 'climate skeptics,' but attempts to engage them in dialogue. She can, as well, be rather pointed in criticizing her colleagues, as in a post on the skeptic site climateaudit where she argues for greater transparency for climate data and calculations (mirrored here). In this post she makes a point that tribalism in science is the main culprit here —- that when scientists 'circle the wagons' to defend against what they perceive to be unfair (and unscientific) attacks, the result can be damaging to the actual science being defended. Is it still possible to conduct a dialogue, or is there no possible common ground?"Read more of this storyat Slashdot.

    +Plasma Device Kills Bacteria On Skin In Seconds
      Ponca City, We love you writes "In medicine, plasma, the fourth state of matter, is already used for sterilizing surgical instruments; plasma works at the atomic level and is able to reach all surfaces, even the interior of hollow needle ends. Now the BBC reports that researchers at the Max Planck Institute for Extraterrestrial Physics have demonstrated a plasma device that can rid hands, feet, or even underarms of bacteria, including the hospital superbug MRSA, by creating cold atmospheric plasma that produces a cocktail of chemicals that kills bacteria but is harmless to skin. 'The plasma produces a series of over 200 chemical reactions that involve the oxygen and nitrogen in air plus water vapor — there is a whole concoction of chemical species that can be lethal to bacteria,' says Gregor Morfill. 'It's actually similar to what our own immune system does.' The team says that an exposure to the plasma of only about 12 seconds reduces the incidence of bacteria, viruses, and fungi on hands by a factor of a million — a number that stands in sharp contrast to the several minutes hospital staff can take to wash using traditional soap and water. Morfill says that the approach can be used to kill the bacteria that lead to everything from gum disease to body odor and that the prototype is scalable to any size and can be produced in any shape."Read more of this storyat Slashdot.

    +Life and Work On the LHC At CERN
      An anonymous reader sends in a CNet Crave interview with a working physicist at CERN. The interview is full of detail about what it's like to work in this geek paradise (if a bit dumbed-down for an audience assumed not very technical). Dr. Paul Jackson, a particle physicist working on the LHC's Atlas experiment, says there's no chance of black holes wiping us out, and that the time travel speculation is bunkum. He is 100% convinced that they will find the Higgs boson. The scientists there favor Macs, while computers in the control room are Linux-based. "What would happen if you were standing in front of the beam? You would die. It would be a pretty spectacular death, and you wouldn't know a lot about it. ... It would be the equivalent of having 87kg of TNT dumped into your body."Read more of this storyat Slashdot.

    +The World's First Osmotic Power Plant
      ElectricSteve writes "Her Royal Highness Crown Princess Mette-Marit of Norway officially opened the world's first osmotic power plant prototype on November 24. The prototype has a limited production capacity and will be used primarily for testing and data validation, leading to the construction of a commercial power plant in a few years time. Statkraft claims that the technology has the global potential to generate clean, renewable energy equivalent to China's total electricity consumption in 2002 or half of the EU's total power production" What's osmotic power? Wikipedia to the rescue!Read more of this storyat Slashdot.

    +Programmable Quantum Computer Created
      An anonymous reader writes "A team at NIST (the National Institute of Standards and Technology) used berylium ions, lasers and electrodes to develop a quantum system that performed 160 randomly chosen routines. Other quantum systems to date have only been able to perform single, prescribed tasks. Other researchers say the system could be scaled up. 'The researchers ran each program 900 times. On average, the quantum computer operated accurately 79 percent of the time, the team reported in their paper.'"Read more of this storyat Slashdot.

    +Tag Images With Your Mind
      blee37 writes "Researchers at Microsoft have invented a system for tagging images by reading brain scans from an electroencephalograph (EEG). Tagging images is an important task because many images on the web are unlabeled and have no semantic information. This new method allows an appropriate tag to be generated by an AI algorithm interpreting the EEG scan of a person's brain while they view an image. The person need only view the image for as little as 500 ms. Other current methods for generating tags include flat out paying people to do it manually, putting the task on Amazon Mechanical Turk, or using Google Image Labeler."Read more of this storyat Slashdot.

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