Having a water purifier at home is not a big deal but having one with you out in the wilderness, certainly is. Suppose you are in a place where there is no provision for clean drinking water, and those water purifiers that work with electricity in your homes are of no help, what do you do. Well, an environmentally friendly solution can come to your rescue in such situations. One of the most innovative solutions is a Solar still, which harnesses solar energy for providing potable water to its users.