Tanzanian villagers are sterilizing their water with the sun.
1. seal water in plastic bottle
2. put bottle on black-painted roof
3. wait 8 hours
4. UV rays and heat destroy the bacteria
BBC News, "Using the sun to sterilise water." March 22, 2006.http://news.bbc.co.uk/2/hi/africa/4786216.stm (accessed November 9 ,2010).
Monty de Luna
November 9, 2010
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