Black snot ...

It may be gross but I got your attention, didn't I?

ANOTHER thing that is a constant with London is black stuff up your nose. Why is that? I cannot remember any other city in the world (3rd or otherwise) where everytime you blow your nose, the resulting effluent is reminiscent of a swamp creature.

Are the smog levels in London really worse than Sydney/ Paris/ Berlin/ Singapore/ Hong Kong/ Colombo? If not, what is that gunk? Where's Dunc - he's good at those sort of 'technical' questions.

Any answers global travellers?