Environment News Service: Government financial support of biofuel production in the world’s wealthiest countries is costly, has a limited impact on reducing greenhouse gases and improving energy security, and raises world crop prices, finds a new study of policies to promote greater production and use of biofuels in OECD countries. The OECD is the Organization for Economic Cooperation and Development based in Paris, which defines itself as “a unique forum where the governments of 30 democracies work …