William Kamkwamba: 'How I Harnessed the Wind' (TED Talks, 2009)

In this TED Talk, young Malawian William Kamkwamba describes how he built a windmill to power his family's home aged 14, during a time of poverty and famine. The windmill produced electricity and was built from spare parts and scrap. This moving tale of an invention that changed a young boy's life is a powerful testament to the benefits of education, access to knowledge and self-belief. This video was issued by TED under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported Licence, from http://www.ted.com