We know all about ethanol 'round these parts. We write about it all the time (721 posts as of this morning), sometimes good and sometimes bad. Shall we run down the list here? Okay... In the U.S. we use corn to make it, which is not even remotely the best crop choice. Ethanol has less energy density than gasoline. Subsidies artificaly reduce its price. Ethanol can be diluted in water. Okay, that's enough! We get the point. But, the good news is that ethanol is made from renewable crops, and probably has less of an impact on the environment that using petroleum (test results vary, of course). Butanol might be a better choice in the long run. Are there any other alcohol choices that are better? How about Sake? Well, maybe not, but perhaps alcohol made from rice will work out in Japan. Click here for more.

[Source: Treehugger]

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