“ Greenhouse gas emissions? This article mentions that there are no amounts of sulfur in the biofuel compared to standard petroleum and that it can... (read full comment) ” 

Posted on August 1, 2007 at 12:13 PM EDT

“ That is an unfortunate side effect of this industry, not a single tractor used to produce the corn has been converted to a more energy efficient or... (read full comment) ” 

Posted on May 26, 2007 at 12:46 AM EDT

“ Actually, check back into your old high school biology textbooks. I believe they talk about the flora of this planet, and, yes, that includes... (read full comment) ” 

Posted on May 26, 2007 at 12:27 AM EDT

“ Agreeably, most harvested by-products-grass, sawdust, etc... could be easily turned into a more readily available source of biofuel (of course,... (read full comment) ” 

Posted on May 26, 2007 at 12:09 AM EDT

“ We're not moving towards renewables because of just what you said: It's "cheaper" to harvest (if that's a good general word), its cheaper to... (read full comment) ” 

Posted on May 9, 2007 at 6:07 PM EDT

“ There was recently a program on the History Channel talking about alternative fuel systems that talks about a company in Arizona that has found a... (read full comment) ” 

Posted on May 4, 2007 at 8:40 PM EDT