Olin Lathrop wrote: > Gerhard Fiedler wrote: >> I'd never have expected to read "major world cities" and "Naples" in >> one sentence :) >=20 > You're right, Naples isn't as large as the others and really > shouldn't be in that list. I only mentioned it because of the > unusually large threat it faces. It's probably up there in world > cities if you look at the probability of the threat times the number > of people likely to die from it. That would be "threatened cities" rather than "world cities". Anyway, while there are quite a number o cities that are somewhat endangered, there are quite a few with low threat levels -- probably more than those with high threat levels, you just never hear from them :) Besides that are of course the man-made threats, and that's a whole different story then. S=E3o Paulo, Brazil, for example, is partially flooded every summer. This is not due to a natural disaster -- the summer rains are just that, summer rains, as they have been for most of known history --, but due to really bad urban planning. Gerhard --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .