Environmental product design

A green and sustainable concept that only requires clear plastic soda bottles, water and bleach to provide up to 55 watts of light into rural homes. The system harnesses natural sunlight to refract the sun’s rays into poorly lit areas of the home.

 

Drawfour Translation

Sustainable thinking works best when a set of skills is passed on, not just products.

 

http://www.instructables.com/id/How-to-build-a-SOLAR-BOTTLE-BULB/