Coloured bubbles

It's difficult to make brightly coloured bubbles. It's even trickier to make brightly coloured non-toxic non-staining bubbles. But now it's been done: http://www.popsci.com/popsci/science/0a03b5108e097010vgnvcm1000004eecbccdrcrd.html

And, just in case anyone thought ID cards were a really good idea, Stella Rimington (ex-head of MI5) says they wouldn't be useful to the intelligence services.