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We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

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+ - Ask Slashdot: how to verify your identity without being there in person? 1

Submitted by united_notions
united_notions (916092) writes "I work for a large university, and our recruitment policy allows us to interview prospective staff and grad students over Skype, but the chosen applicant still has to show up in person before they can be formally appointed. This is so that they can physically hold up a genuine passport and prove their identity (as a failsafe against bogus interviews). What other ways could applicants do this, without flying potentially around the world just to file paperwork?"

+ - Sharkskin May Be Next Innovation in Swimwear->

Submitted by sciencehabit
sciencehabit (1205606) writes "Researchers have used a 3D printer to replicate the properties of sharksin. Sharkskin is as rough as high grain sandpaper thanks to millions of small toothlike scales called denticles. Grooves along these denticles smooth the flow of passing water, giving swimming sharks a boost. Using the printer, the team studded thousands of identical 2-millimeter denticles onto both sides of a flexible foil. In slow-flowing water, the denticles reduced drag on the foil by 8.7%; the benefits were even more pronounced when the robotic arm mimicked a swimming motion, the team reports, with a 6.6% increase in swimming speed and a 5.9% reduction in energy expenditure. The researchers believe the material could one day be used in speed-boosting swimsuits, though they admit major manufacturing challenges could leave the idea dead in the water."
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+ - How to Turn a Star Into a Supermagnet->

Submitted by sciencehabit
sciencehabit (1205606) writes "Astronomers have figured out how to make the universe’s most powerful magnet. All you need is two massive stars orbiting close to each other so that one swipes gas from the other, causing the thief to spin so quickly that its magnetic field dwarfs that of Earth by 100 trillion-fold. The finding offers fresh insight into how some of the galaxy's smallest but most extraordinary stars arise."
Link to Original Source

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