Low tech innovation

Five low- tech innovations thats helping save people around the globe.  Here are five simple innovations that are making a big difference in people's lives in the developing world. Rocket Stove:  It is an efficient stove that uses as much as half the resources than conventional stoves and it accepts any form of fuels from wood, branches, leaves to cow dung. The design of the stove is simple so it can be easily built using local materials. Plastic Bottle Light: It is great day light bulb that can illuminate the nooks and corners of a house. A Soda bottle is filled with water and three drops of bleach. The bottle is epoxied to the roof through a hole. It works by collecting sunlight in its top half and distributing it from the bottom half inside the room.  Folded Saris: Researchers in Maryland and Bangladesh figured out a simple solution to the problem of water-borne cholera — run the water through an old sari folded into four layers. The rough cotton fibres collect