Tom Reed, Bravo for your response to the apologists for our technological progress. Man should not feel guilty for making progress. If we did not burn oil until we developed other forms of energy, we would have never developed advanced energy systems such as direct mass to energy conversion technology. Obsolescence is a way of progress. Airports will give way to individual aerial transports which will give way to the Star Trek transporter system. We should enjoy the changes along the way. Guilt has no place in this process. Tom Taylor The Gasification List is sponsored by USDOE BioPower Program http://www.eren.doe.gov/biopower/ and PRM Energy Systems http://www.prmenergy.com Other Sponsors, Archives and Information http://www.crest.org/renewables/gasification-list-archive http://solstice.crest.org/renewables/biomass-info/gasref.shtml http://www.crest.org/renewables/biomass-info/ http://www.crest.org/renewables/biomass-info/carbon.shtml