Power from water evaporation

Columbia University scientists created two novel devices to exploit  energy from water evaporation to produce electricity.

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Watch this video to see how they work: http://www.eurekalert.org/pub_releases/2015-06/cu-ref061515.php

Read the paper it has been published on this topic: http://www.nature.com/ncomms/2015/150616/ncomms8346/full/ncomms8346.html