July 11 - A bottled liter of water with a few teaspoons of bleach is proving to be a successful recipe for dwellers in the light-deprived slums of the Philippines. The simple technology is spreading sunlight in places where it has never been, and saving residents money at the same time. Gemma Haines reports.
الأربعاء، 13 يوليو 2011
A "liter of light"
Via Reuters:
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