Novo Nordisk (Denmark) is the most sustainable company on earth this year, according to The Corporate Knights Most Sustainable Companies of 2012 list. It is followed by Natura Cosmeticos (Brazil) and Statoil ASA (Norway) in second and third position, respectively.
Some of the things measured were how much carbon emissions and waste is produced by companies, as well as their water and energy usage in proportion to how much revenue they generate.
Other, non-environmental factors were also considered, such as the proportion of board directors who are women and how much employee turnover there is. The Corporate Knights research group evaluated the 400 participating companies using 11 environmental, social and governance performance measures, including energy productivity, waste productivity and CEO-to-average-worker pay ratio. Corporate Knights added employee turnover as an indicator this year.
You can view the ranking and related information here.