Malawi windmill boy with big fans
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.