Italian designer Gabriele Diamanti (@GabDiamanti) has invented Eliodomestico, an eco-distiller running on solar power, to provide safe drinking-water for people in developing countries.

A very simple way to produce healthy, bacteria-free water.
Eliodomestico is an open source project.

Winner at Core77 Design Award 2012 – social impact category;
Finalist at the Prix Émile Hermès 2011 competition.
Source of video: http://vimeo.com/47238447