Northern countries have promoted bio fuel production in the South apparently for reducing GHG emissions. Whether or not bio fuels can help reduce emissions sustainably is an issue with no end. Studies like the present can help produce sugar cane sustainably in a country (Peru) that may play a key role in the bio ethanol market. Introduction explains a North South perspective, and explores negative impacts and sustainability. Literature review checks different papers about bio fuel sustainability, social impacts, bio mass certification, and the Peruvian context. For potential social impacts;...