What is the invention of the social entrepreneur whose life is the subject of an upcoming 2018 Indian film called 'Padman' ?
Padman:  The film is inspired from the life of Arunachalam Muruganantham. Arunachalam Muruganantham:  He is the inventor of a low-cost sanitary pad making machine and has innovated grass-roots mechanisms for generating awareness about traditional unhygienic practices around menstruation in rural India.
i don't know