News
US 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. ...
Nowadays 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 ...
Scientists 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...
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...
Questions

If I get sunburnt easily will I get skin cancer easily too?
Yes, you are. People who do burn and freckle more easily in the sun are more likely to get skin cancer. It's very important that the fairer you are, the more likely you burn, the more you should take care in the sun. Definitely. So avoid the sun, cover up and slap on the factor 30.
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Interviews
Is that file you deleted really gone? Could someone retrieve your passwords from an old hard disk? We ask Graham Henley...
Kitchen Science
There 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.
QotW
Does 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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