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Gecko GlueUS scientists have taken a leaf from the foot of a gecko to develop a self-dissolving surgical glue to replace stitches and staples. The new material consists of a layer of a polymer called PGSA, short for poly(glycerol-co-sebacate-acrylate), coated with a layer of oxidised dextran sugar molecules. ...
Banned drug gives clues to depression treatmentNowadays depression is often treated with drugs, but sometimes the effects of treatment can take many weeks to appear. So there’s an urgent need to find drugs that act more quickly. Scientists are now turning to ketamine, a drug usually used as an anaesthetic by vets, and notorious for being abused ...
Molecular billiardsScientists have revolutionised the study of chemical surfaces by coming up with a way to push individual atoms around like a miniature billiard game. Markus Ternes from IBM's Almaden Research Center in San Jose used a technique called atomic force microscopy to move atoms of cobalt over platin...
The eyes have it – or do they?For 150 years, zoology students have dutifully learned that circular markings on animals, such as the so-called eyespots found on a butterfly’s or moth’s wings, are there because they look like the eyes of that animal’s predator. It was thought that these “eyes” scare off anything hoping to have a q... |
Data RecoveryIs that file you deleted really gone? Could someone retrieve your passwords from an old hard disk? We ask Graham Henley...
Lemon-Powered iPodThere have been various spoof films showing how to charge your ipod using fruit and vegetables. But is it actually possible? Find this out along with how a battery works.
Size of Smell SenseDoes a strong smell mean a lot of odour in the air, or can we be tricked by small smells?Deletion of a hard drive does nothing. It is the overwriting of the hard drive that actually physically removes the data. There is some ta...
- another_someone - 2nd Mar 08
Which is what the above programme does. Overwriting, erasing...tomato, tomato... - paul.fr - 2nd Mar 08
Graham and I did discuss the chance that data could be recovered after just one overwrite, due to a 'magnetic resonance' effect which may in... - BRValsler - 3rd Mar 08
Blimey, that's a shock. Thanks for that bombshell Ben; I'd never have believed it. Chris... - chris - 9th Mar 08
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