I suspect most of the members here live in the US. So how did you manage to build cities out of deserts? My country Australia would like the answer as we have one of the driest and hottest interiors on the planet. Very little grows in what we call the Red Centre. Every year we experience crippling floods from the wet season in the north to devastating dry spells in the centre that kill livestock and the livelihoods of the man on the land. Whether it is climate change or not is debatable but my country is having our longest dry spell on record. Once gushing rivers are parched river beds.. once full farm dams are empty.. once thriving crops are withering and dying. Our politicians are doing very little other than procrastinating over the problem. The reason I asked how you built cities in deserts is because we need to do the same to break the dry spells first and open up our vast interior to population growth. A wise man called Dr John Bradfield proposed a solution to this crippling problem back in the late 1930s. His idea was to divert waters from the drenched Top End of our continent into the parched interior. A visionary proposal but not rocket science. Did the the powers to be of the day accept his vision ..no they ridiculed it and refused to implement it. Seventy something years on and the Bradfield Scheme is just that an unfulfilled idea. It is time to revisit the this man's vision before it is too late for our farms and our country.