Jagman......don't see a lot of meat on those bones.
For starters, what you presented was an interpretation of the article. Which begs the question....what point of view is the presenter of this interpretation bringing to the table?
Second, what time period was being referred to, in terms of this research, to provide some context. What I found, from this interpretation, was the following.
"For starters, the article refers to previous studies conducted by the US Dept of Energy, that suggest a negative energy return for bio-ethanol (ERAB 1980, 1981). Apparently, these reports were reviewed by a panel of independent experts, and the conclusions were found to be valid. A review conducted by one of the two authors here (Pimentel 2003) of those reports showing a positive energy return, indicated that in those reports many inputs (requiring energy for production process) were omitted."
