Watercone is a polycarbonate cone with the capacity to purify up to 1.5 liters of water a day with just a little solar energy.

All users have to do to create drinkable water is pour dirty or salt water into the cone's black base, place the cone atop it in the sun. As the water evaporates upwards it condenses on the cone's inner wall and tricles down into a seperate trough. To access the clean water simply lift the cone and pour.

Link - via treehugger

From the Upcoming ueue, submitted by whitespace.

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A very cool device. I've been following its development for a while and the idea is simple yet powerful. The ability to create potable water from say sea water or dirty water can save hundreds of lives without the problem of spending alot of money on distilling plants.

And kudos to Jay for pointing out the old, tried and trusted method of creating drinkable water from a still! :)
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Solar Still ftw! Yeah, this has been in the boy scout manual for, like, a hundred years. Or at least since the invention of clear plastic wrap. Much more portable than carrying around a satellite dish-sized rigid plastic cone (which no one will bother with during the Zombie-pocalypse).
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