Every second, hundreds thousands cubic meters of fresh water moves on our planet, already ten most flowing rivers occupy more than 2,500 million hectares. These are the arteries of our world, nourishing the land, renewing seas and oceans, and feeding peoples and environments since inmemorial time. Ancient civilizations and major cities have settled along rivers since millennia by communications facilities (main roads) and livelihoods (water and food). At present, the great flows of watercourses still feeding human trade flourishing next to its wadies.
"WHO CAN DRAW A RIVER OUT OF TURN IN A RIVER"
Rivers are fundamental for ecosystem but water pollution is one of the most serious global problems; acid rain, wastewater discharges, agricultural chemicals, heavy metals ... are incorporated into the flow of rivers. The problem is acute worldwide by the quantity and diversity of polluting agents, and / or the impossibility of purification and regeneration of wastewater. However, contemporary societies depends on the chemical products (food or chemical industries, daily life facilities); many of these products are toxic and may cause irreversible consequences.
(FULL STORY AVAILABLE BY REQUEST)