Corporate Knights, a Toronto-based media company, released its seventh-annual list of the world’s most sustainable companies. Corporate Knights worked with a research firm to winnow down its list of publicly traded companies from 3,000 to 300, based on financial performance and other criteria. Then the Corporate Knights research group worked with two different asset management firms to evaluate those 300 companies based on 10 environmental, social and governance performance metrics, including energy productivity, waste productivity and CEO-to-average-worker pay ratio. An eleventh indicator was added for “transparency.” The Nordic countries (Norway, Denmark, Finland) placed especially well in the rankings having 7 out of the top 20 companies. The United Kingdom failed to place a company in the Top 20 of the list. A complete list at Forbes .The list's most sustainable company comes from the oil and gas industry--a counterintuitive pick. The Norwegian oil and gas producer Statoil leads the list, thanks in part to improvements in its water productivity. Rounding out the top 10 list are Johnson & Johnson, Danish biotech company Novozymes, Nokia , Belgian tech company Umicore, Intel , AstraZeneca , Credit Agricole, Norwegian financial services company Storebrand, and Danske Bank.