The world population is still further growing; the climate seems to change, more or less also influenced through the human caused emissions. The glaciers, the ice cover at the northern Polar Regions shall may disappear, the marine shelf benthic and the pelagic ecosystem are menaced to extinguish because of the fishery, as the sandy shores, the mangrove forests, the saltmarshes and the salt lakes.
The freshwater scarcity will grow, particularly there, where the population grows. Hotter climate and developmentefforts will demand more freshwater for irrigation, sanitation, stock breeding,industrial production and just for fun.
We can clean and reuse wastewater,we can forcing the field drainage as saving against salinity growth. We can pump up fossil groundwater, we can desalinate brackish and seawater, using fossil and/or nuclear fuels.
Dr. Antonio Mascolo