Every time computer users print out pages on a laser printer, they are using toner made from petroleum-based products. Now, there's a greener choice that shows promise: a toner product derived from soybean oil.

Some educators might be wary, but potential benefits are clear. It's easier to recycle paper printed with soy. And perhaps more important in a sour economy, soy toners can cost less than the standard alternative. Soybeans are a renewable resource whose price is likely to be more stable than that of oil.

Many newspaper, magazine, and book publishers have shifted to soy-based ink in recent years. Early results suggest...

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