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The push to extend fracking to arid regions is drawing attention to water-free techniques.
Oasys Water says it will test complete, large-scale systems using forward osmosis early next year.
Cotton fabric treated with nano inks produces a water filter that’s efficient and needs little power to work.
New light-activated catalyst keeps on working even after the lights go out.
The use of news reports as sources calls a key finding into question.
Energy-saving process uses free heat to desalinate seawater.
Combining light and electrical current removes contaminants from water.