All talks

How I harnessed the wind

TED 2009Jul 20095 min3175083 views

Speaker

About this talk

At age 14, in poverty and famine, a Malawian boy built a windmill to power his family's home. Now at 22, William Kamkwamba, who speaks at TED, here, for the second time, shares in his own words the moving tale of invention that changed his life.