I was very impressed by Dr Ben Goldacre in this remarkable TV smackdown of Prof Susan Greenfield and Dr Aric Sigman's sensational claims about Facebook rotting children's brains.

There's even more in Ben Goldacre's Bad Science blog.

Watching this stuff, I was strongly reminded of these classic clips from Brass Eye. (Now that is scientific fact. There's no real evidence for it, but it is scientific fact.)

Hat tip to David Smith's highly nutritious daily feed.