Most scientific retractions involve fraud, not error

There's been a ten-fold increase in the number of fraud-related retractions of biomedical papers since 1975, putting paid to the idea that it's usually just a case of owning up to an inadvertent error.

Nefarious Koobface worm rears its ugly head on Facebook

The nefarious Koobface worm of digital yore has made a dangerous comeback by rearing its ugly head on Facebook.