A crash course in changing the world.
Still many people have no access to drinking water. Millions die by polluted water. But with new technologies, there is new hope to get a grip on the water shortage in some countries.
For example, Singapore produces drinking water from wastewater. Then Singapore must not import water from Malaysia via tankers any longer. The concept of converting wastewater into drinking water called "NEWater".
With reverse-osmosis and membrane-filters the wastewater is treated and UV-rays kill the remaining organisms and germs.
So you can drink this water.
I find such new models could provide a solution to the global water crisis.
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