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New study: Fracking hasn't polluted Arkansas water
May 16, 2013 5:58 pm | by KEVIN BEGOS - Associated Press - Associated Press | CommentsHydraulic fracturing for natural gas hasn't contaminated drinking water wells in Arkansas, according to a new study, but researchers said the geology there may be more of a natural barrier to pollution than in other areas where shale gas drilling takes place.
Private spaceship tests underway
May 16, 2013 3:17 pm | by BROCK VERGAKIS - Associated Press - Associated Press | CommentsA Colorado company developing a spaceship to take astronauts to the International Space Station is having elements of its spacecraft undergo landing-related tests at NASA facilities in Virginia and California. NASA wants private firms to ferry astronauts into low-Earth orbit so it can focus on deep-space exploration and send crews to a nearby asteroid and eventually Mars.
Flowers self-assemble in a beaker
May 16, 2013 2:46 pm | CommentsWith the hand of nature trained on a beaker of chemical fluid, the most delicate flower structures have been formed in a Harvard University laboratory—and not at the scale of inches, but microns. These minuscule sculptures, curved and delicate, don't resemble the cubic or jagged forms normally associated with crystals, though that's what they are. Rather, fields of flowers seem to bloom from the surface of a submerged glass slide.
Artificial forest for solar water-splitting
May 16, 2013 2:34 pm | CommentsIn the wake of the sobering news that atmospheric carbon dioxide is now at its highest level in at least three million years, an important advance in the race to develop carbon-neutral renewable energy sources has been achieved. Scientists with Lawrence Berkeley National Laboratory have reported the first fully integrated nanosystem for artificial photosynthesis.
Add boron for better batteries
May 16, 2013 2:20 pm | CommentsFrustration led to revelation when Rice University scientists determined how graphene might be made useful for high-capacity batteries. Calculations by the Rice laboratory of theoretical physicist Boris Yakobson found a graphene-boron anode should be able to hold a lot of lithium and perform at a proper voltage for use in lithium-ion batteries.
Stem cells recovered from cloned human embryos
May 16, 2013 12:38 pm | CommentsScientists have finally recovered stem cells from cloned human embryos, a longstanding goal that could lead to new treatments for such illnesses as Parkinson's disease and diabetes. A prominent expert called the work a landmark, but noted that a different, simpler technique now under development may prove more useful.
Weather on the outer planets only goes so deep
May 16, 2013 12:31 pm | CommentsThe planets Uranus and Neptune are home to extreme winds blowing at speeds of over 1,000 km/hour, hurricane-like storms as large around as Earth, immense weather systems that last for years, and fast-flowing jet streams. Researchers using a new method for analyzing the gravitational field of these planets have determined an upper limit for the thickness of the atmospheric layer, which limits the depth of stormy weather.
DNA-guided assembly yields ribbon-like nanostructures
May 16, 2013 12:20 pm | CommentsScientists at Brookhaven National Laboratory have discovered that DNA "linker" strands coax nano-sized rods to line up in way unlike any other spontaneous arrangement of rod-shaped objects. The arrangement—with the rods forming "rungs" on ladder-like ribbons linked by multiple DNA strands—results from the collective interactions of the flexible DNA tethers and may be unique to the nanoscale.
Insights into how materials transfer heat could lead to improved electronics
May 16, 2013 10:50 am | CommentsUniversity of Toronto engineering researchers, working with colleagues from Carnegie Mellon University, have published new insights into how materials transfer heat, which could lead eventually to smaller, more powerful electronic devices.
A new laser paradigm: An electrically injected polariton laser
May 16, 2013 9:45 am | CommentsEngineering researchers at the University of Michigan have demonstrated a paradigm-shifting "polariton" laser that's fueled not by light, but by electricity. Polaritons are particles that are part light, and part matter. The new device requires at least 1,000 times less energy to operate, compared with a conventional laser.
A nano solution in the fight against diabetes
May 16, 2013 9:38 am | by Anne Trafton, MIT News Office | CommentsInjectable nanoparticles developed at Massachusetts Institute of Technology may someday eliminate the need for patients with Type 1 diabetes to constantly monitor their blood-sugar levels and inject themselves with insulin. The nanoparticles were designed to sense glucose levels in the body and respond by secreting the appropriate amount of insulin.
Moth-inspired nanostructures take the color out of thin films
May 16, 2013 7:48 am | CommentsInspired by the structure of moth eyes, researchers at North Carolina State University have developed nanostructures that limit reflection at the interfaces where two thin films meet, suppressing the “thin-film interference” phenomenon commonly observed in nature. This can potentially improve the efficiency of thin-film solar cells and other optoelectronic devices.
Computer research project shows shift in English language
May 16, 2013 7:38 am | CommentsUniversity of Illinois English professor Ted Underwood recently wrapped up a research project involving more than 4,200 books. Since that work revealed dramatic shifts in the English language between the 18th and 19th centuries, he’s now expanding his research to include more than 470,000 books—almost every English language book written during that era and preserved in a university library.
Ultraresponsive magnetic nanoscavengers could usher next-generation water purification
May 15, 2013 3:43 pm | by Andrew Myers, Stanford University | CommentsAmong its many talents, silver is an antibiotic. Titanium dioxide is known to glom on to certain heavy metals and pollutants. Other materials do the same for salt. In recent years, environmental engineers have sought to disinfect, depollute, and desalinate contaminated water using nanoscale particles of these active materials. Engineers call them nanoscavengers.
Engineers monitor heart health using paper-thin flexible 'skin'
May 15, 2013 3:21 pm | CommentsEngineers combine layers of flexible materials into pressure sensors to create a wearable heart monitor thinner than a dollar bill. The skin-like device could one day provide doctors with a safer way to check the condition of a patient's heart.
