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Nature inspires a greener way to make colorful plastics

July 30, 2014 2:00 pm | Comments

Long before humans figured out how to create colors, nature had already perfected the process. Now scientists are tapping into those secrets to develop a more environmentally friendly way to make colored plastics. Their paper on using structure—or the shapes and architectures of materials—rather than dyes, to produce color appears in Nano Letters.

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Dissolvable fabric loaded with medicine might offer protection against HIV

July 30, 2014 1:54 pm | by Michelle Ma, Univ. of Washington | Comments

Soon, protection from HIV infection could be as simple as inserting a medicated, disappearing fabric minutes before having sex. Univ. of Washington bioengineers have discovered a potentially faster way to deliver a topical drug that protects women from contracting HIV. Their method spins the drug into silk-like fibers that quickly dissolve when in contact with moisture, releasing high doses of the drug.

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A smart wristband for nocturnal cyclists

July 30, 2014 12:08 pm | Comments

A team of engineers in Switzerland have invented a wristband that flashes when the rider reaches out to indicate a turn. Designed to add safety for cyclists in urban areas, the relatively simple device consists of an accelerometer and a magnetometer that can detect the position of the user's arm. When the rider reaches out laterally, the accelerometer and magnetometer provide data to a microcontroller, which directs the LED to engage.

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Saving seeds the right way can save the world’s plants

July 30, 2014 11:50 am | Comments

For decades, strategic seed collections that help preserve biodiversity have been guided by simple models that offer a one-size-fits-all approach for how many seeds to gather. A new study, however, has found that more careful tailoring of seed collections to specific species and situations is critical to preserving plant diversity. A new approach called simulation-based planning was used to recommend how seeds are saved and reintroduced.

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Climate change research goes to the extremes

July 30, 2014 11:50 am | by Angela Herring, Northeastern Univ. | Comments

By now, most sci­en­tists agree that the tem­per­a­ture of the planet is rising and that the increase is due to human activ­i­ties. But the jury still out regarding the vari­ability of that increase. Researchers using “big data” computational tools have recently taken a systematic approach to answering this question and their results point to both higher global temperatures and increasing variability among those temperature extremes.

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All-in-one energy system offers greener power for off-grid buildings

July 30, 2014 11:49 am | Comments

Developed in the U.K., an innovative “trigeneration” system fuelled entirely by raw plant oils could have great potential for isolated homes and businesses operating outside grid systems. the small-scale combined cooling, heat and power system has been designed to utilize its waste heating by storing it through measures such as batteries and supercapacitors.

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Exploring 3-D printing to make organs for transplants

July 30, 2014 11:48 am | Comments

With the help of conventional inkjet printers, scientists are reporting new understanding about the dynamics of 3-D bioprinting that takes them a step closer to realizing their goal of making working tissues and organs on-demand. Their recent work in testing bioinks filled with hydrogel and different concentrations of mouse fibroblasts shed light on how the inks behave when they’re dispensed through printer nozzles.

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Scientists separate a particle from its properties

July 30, 2014 9:59 am | Comments

Researchers in Austria have performed the first separation of a particle from one of its properties. The study showed that in an interferometer a neutron’s magnetic moment could be measured independently of the neutron itself, thereby marking the first experimental observation of a new quantum paradox known as the “Cheshire cat”.

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NASA-funded x-ray instrument settles interstellar debate

July 30, 2014 9:42 am | Comments

New findings from a NASA-funded instrument have resolved a decades-old puzzle about a fog of low-energy x-rays observed over the entire sky. Thanks to refurbished detectors first flown on a NASA sounding rocket in the 1970s, astronomers have now confirmed the long-held suspicion that much of this glow stems from a region of million-degree interstellar plasma known as the local hot bubble, or LHB.

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World’s smallest propeller could be used for microscopic medicine

July 30, 2014 9:29 am | by Kevin Hattori, American Technion Society | Comments

An Israeli and German research team have succeeded in creating a tiny screw-shaped propeller that can move in a gel-like fluid, mimicking the environment inside a living organism. The filament that makes up the propeller, made of silica and nickel, is only 70 nm in diameter. The entire propeller is just 400 nm long.

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Huge waves measured for first time in Arctic Ocean

July 30, 2014 8:03 am | by Hannah Hickey, Univ. of Washington | Comments

As the climate warms and sea ice retreats, the North is changing. An ice-covered expanse now has a season of increasingly open water that is predicted to extend across the whole Arctic Ocean before the middle of this century. Storms thus have the potential to create Arctic swell. A Univ. of Washington researcher made the first study of waves in the middle of the Arctic Ocean, and detected house-sized waves during a September 2012 storm.

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Brainwaves can predict audience reaction for TV programming

July 30, 2014 7:47 am | by Jason Maderer, Georgia Institute of Technology | Comments

Media and marketing experts have long sought a reliable method of forecasting responses from the general population to future products and messages. According to a study conducted at the City College of New York in partnership with Georgia Tech, it appears that the brain responses of just a few individuals are a remarkably strong predictor.

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Team makes cancer glow to improve surgical outcomes

July 30, 2014 7:45 am | Comments

The best way to cure most cases of cancer is to surgically remove the tumor. The Achilles heel of this approach, however, is that the surgeon may fail to extract the entire tumor, leading to a local recurrence. With a new technique based on injectable dye and infrared light, researchers in Pennsylvania have established a new strategy to help surgeons see the entire tumor in the patient, increasing the likelihood of a positive outcome.

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NIST corrosion lab tests suggest need for underground gas tank retrofits

July 30, 2014 7:40 am | by Laura Ost, NIST | Comments

A hidden hazard lurks beneath many of the roughly 156,000 gas stations across the U.S. The hazard is corrosion in parts of underground gas storage tanks. In recent years, field inspectors in nine states have reported many rapidly corroding gas storage tank components such as sump pumps.

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Generation of tanners see spike in deadly melanoma

July 29, 2014 3:24 pm | by Anne Flaherty - Associated Press - Associated Press | Comments

Stop sunbathing and using indoor tanning beds, the acting U.S. surgeon general warned in a report released Tuesday that cites an alarming 200% jump in deadly melanoma cases since 1973. The report blames a generation of sun worshipping for the $8 billion spent to treat all forms of skin cancer each year.

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