Life is based on water. Why not our currency! There is plenty of it in the industrial country... very few in the poor country... ( so no instant shift of power ). Everyone benefit if we respect water as our currency. Clean water is good for everyone. It's very easy to store, no risks, furthermore it can pack energy in it ( ice,water, gaz) It possible to expand it's quantity easly trough desalinization process... thusfar providing insentive to a clean energy future It's impossible to cornered ( None can have a sufficient quantity of water to perturbate the market ). It's exponentially avaiable, so meet the needs of a exponential economy... It's the only way of protecting our planet, all it's life while still staying creative and happy. However I am not an ingenior, so I am sure a good and freethinking economist team can really solve this. If we had a currency based on gold we can have one on water. And to make the desert green... it's a need.