What is the difference between 'soy-based' candles and 'petroleum-based paraffin' candles?: Hosting Green Events

What is the difference between 'soy-based' candles and 'petroleum-based paraffin' candles?: Dan Sharp (Green Family Expert) gives expert video advice on: How can I make my parties and events more green? | What kinds of food and beverages can I serve at a green event? | What is 'organic wine'? and more...