Biofuels?

There is a great debate about the viability of and cost effectiveness of biofuels, those fuels created from renewable sources. The Washington Post articulates the issues very well in this article http://www.washingtonpost.com/wp-dyn/content/article/2006/06/30/AR2006063001480.html.

The discussion details acreage required, and studies the net energy output of ethanol as well as some other considerations.