I really don't think it is fair to say one is "greener" or more environmentally friendly than the other. You can find positive reasons to use soy, palm or paraffin. And if you look at the flip side, I think you can find harmful facts regarding the use off all three as well. To think otherwise is naive. For example, here are some of the reasons why soy is harmful to us and the environment, and the communities where it is grown: http://www.nytimes.com/2012/07/03/opinion/paraguays-destructive-soy-boom.html?_r=0 http://books.google.com/books/about/Stolen_Harvest.html?id=S6TjbOz0z68C http://mrzine.monthlyreview.org/2012/dangl170712p.html http://www.amazon.com/Whole-Soy-Story-Americas-Favorite/dp/0967089751/ref=sr_1_1?s=books&ie=UTF8&qid=1349746794&sr=1-1&keywords=the+whole+soy+story I could list articles outlining reasons why the use of palm or paraffin is bad, but I'm not going to, I think you get my point. I make candles out of palm, paraffin and soy and love all 3 for their unique characteristics but am not fooled for a second into thinking that one is "greener" than the other.