Now this I would call big news ... success at manufacturing cement with no CO2 emissions ( present source of 5-10% human added CO2) by removing CO2 from smokestacks of power plants and passing it through seawater. http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2008/09/01/MNGD12936I.DTL&feed=rss.news Jerry B