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William's talk at TED - http://www.ted.com/talks/william_kamkwamba_how_i_harnessed_the_wind.html http://www.ted.com/talks/william_kamkwamba_how_i_harnessed_t...
by joechung 17y ago
William's talk at TED - http://www.ted.com/talks/william_kamkwamba_how_i_harnessed_the_wind.html http://www.ted.com/talks/william_kamkwamba_how_i_harnessed_t...