
The extraordinary true story of a Malawian teenager who transformed his village by building electric windmills out of junk is the subject of a new book, The Boy Who Harnessed the Wind.
Self-taught William Kamkwamba has been feted by climate change campaigners like Al Gore and business leaders the world over.
His against-all-odds achievements are all the more remarkable considering he was forced to quit school aged 14 because his family could no longer afford the $80-a-year (£50) fees.
When he returned to his parents' small plot of farmland in the central Malawian village of Masitala , his future seemed limited.
But this was not another tale of African potential thwarted by poverty.
Defence against hunger
The teenager had a dream of bringing electricity and running water to his village.