Mongabay: In a move that represents a significant development for efforts to reduce the environmental impact of palm oil, consumer products giant Unilever today announced it will be able to trace all of the palm oil it sources by the end of 2014. The policy is notable because at present few major companies know where the palm oil they buy ultimately comes from. They may source from suppliers certified under the Roundtable on Sustainable Palm Oil (RSPO), an eco-certification initiative, or buy GreenPalm certificates...