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Sustainable Environment: Dead battery become alive again 
Saving battery can save the environment. This article describe a method to save the dead battery.
http://sustainable-environment.blogspot.com/2009/05/dea
d-battery-become-alive-again.html
d-battery-become-alive-again.html
by 1 users
Sustainable Environment: Green environment
Green environment. As Laozi said: Human should live a natural life. Now western culture found this is true after they destroyed the world a lot.
http://sustainable-environment.blogspot.com/2009/05/wha
t-is-green-green-is-cause-by-people.html
t-is-green-green-is-cause-by-people.html