Water. Without it, we die. Now, more and more, our vital supply of clean water is vanishing - evaporating. And what is left is dry earth, drought, fallow fields, starvation, hunger, nations on the move, other nations threatened. This program highlights some of the important new technologies being developed on a worldwide basis to bring clean, fresh water back to the a world that so desperately needs it as well as curtail the growing demand in resourceful and ingenuous ways.