When it comes to water Paul, there is NO crackpot idea that has not been suggested in Oz. One of our mining oligarchs was very keen on setting off an atom bomb in West Australia as it would form a nice big hole which would fill with sea-water and form a harbour. He felt that his shipping costs of the mountains of iron ore he was digging up were too high. And he was really serious about this solution!

Luckily it was too crazy for even the gung-ho 70s or 80s (forget which)!