In the southwestern United States, where years of drought are leading water managers to consider drastic water-provision measures such as desalination and cloud seeding, entrepreneurs have suggested reviving a water-saving technique that was tried and abandoned half a century ago. They propose to stretch dwindling water supplies by slowing down evaporation from reservoirs by means of a surface barrier of cheap, non-toxic, biodegradable chemicals just one molecule thick — two-millionths of a millimetre.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/slick-idea-proposed-stretch-water-supplies
[2] http://admin.indiaenvironmentportal.org.in/category/author/matthew-wald
[3] http://admin.indiaenvironmentportal.org.in/category/journal/nature
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drought
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-management
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/reservoirs
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-conservation