Low-tech inventions that help change lives

angelaelle writes: "The current issue of Popular Mechanics features their Breakthrough Awards program for inventors. Some of the winning inventions help improve the living conditions for people in third world countries using low-tech materials and assembly methods like this cookstove for people in Darfur, and in the case of this Windbelt developed by Shawn Frayne, could be used to provide cheap, clean energy alternatives here. On their web site they have videos of each winner. These videos are really fascinating and inspiring because they talk about the inventor's eureka moment, instead of just talking about their inventions. Here the link to all the winners: http://www.popularmechanics.com/breakthrough07"