Low Tech Innovation: Amazing ideas

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 microscopic plankton, which attracts the cholera. The researchers taught the technique to women in 27 villages in Bangladesh and monitored the villagers' health. They found that over the next 18 months, the cholera rate dropped by 50 percent compared to surrounding villages.
  

• Adjustable Glasses:Joshua Silver's adjustable glasses, just add or subtract a silicon oil sandwiched in the middle of the lens until things look clear, a process that usually takes no more than a couple of minutes. These glasses have the benefit of being easy to deploy and even easier to adjust, and have greatly improved the quality of life for developing world citizens with less-than-perfect vision.
  
  
  
  
  

• The LifeStraw:Billions of people around the world have to draw their water from dirty, polluted sources. Millions of people die every year from diseases contracted from drinking water and millions more are sickened. One of the tools for fighting the transmission of water-borne disease is the LifeStraw, a simple water filter that cleans the water as it is sucked it up from the polluted source. The LifeStraw is small enough to be easily carried and can be shared by family and friends.