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Pens filled with high-tech inks for do-it-yourself sensors

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A new simple tool developed by nanoengineers at the University of California, San Diego, is opening the door to an era when anyone will be able to build sensors, anywhere, including physicians in the clinic, patients in their home and soldiers in the field. The team from the University of California, San Diego, developed high-tech bio-inks that react with several chemicals, including glucose. They filled off-the-shelf ballpoint pens … Read More → "Pens filled with high-tech inks for do-it-yourself sensors"

Self-destructing site shows how long it takes Google to find you

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Wondering how long it would take for Google’s search engine to find your website if you didn’t promote it? About 22 days, according to Matthew Rothenberg. He recently launched Unindexed, a purposefully short-lived web community that was set to self-destruct as soon as Google’s indexing technology made it searchable. While Rothenberg didn’t go out of his way to maintain the secret, participants knew that every view, post and shared link would bring the site … Read More → "Self-destructing site shows how long it takes Google to find you"

These flowers change color when you feed them beer

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According to RevBio, if you know which enzyme is not working, the process can be fixed and the flower can gain color. The company has modified a petunia to do just this when a certain molecule is present. When watered with a dilute ethanol, such as beer, the plant turns from white to red in 24 hours. The change can then be reversed by using regular water.

Of course, a plant need not be ill-functioning to … Read More → "These flowers change color when you feed them beer"

New energy harvesting method could use dry ice to power life on Mars

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Researchers at Northumbria University in England say they have invented an innovative technique to harvest energy from solid carbon dioxide. The research, which was published in the journal Nature Communications, makes use of a property of liquids known as the Leidenfrost effect.

The scientists have proposed a new type of engine that would exploit the Leidenfrost effect, which occurs when a liquid comes close to a surface much … Read More → "New energy harvesting method could use dry ice to power life on Mars"

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