In the recent discussion of biofuels, there seems to be a consensus that producing ethanol from corn has serious adverse consequences both ecological and economic. However I have not seen anyone address the broader question of what alternatives we have in the long run. Fossil fuels will eventually run out - oil in a century or so at most, coal in several centuries - and while there may be some wonderous new technology to fill the gap, we cannot count on that. I suspect that combustible fuels will always be with us, and I wonder what they will be.
Bill Silvert
