“ Sustainable Concrete The verbage used in this article says that the viscosity is increased in concrete to make it more durable? This must be some... (read full comment) ” 

Posted on February 9, 2009 at 2:00 PM EST

“ Decentralized Power Small locally controlled coops would lessen our dependance on the big grid. Small grid concepts, where local communities share... (read full comment) ” 

Posted on December 22, 2008 at 11:29 AM EST

“ Clean Safe Energy GeoThermal Electric is the clean alternative to Nuclear, & Coal. Geothermal resources are available everywhere. Some place are... (read full comment) ” 

Posted on December 17, 2008 at 2:04 PM EST