Power Plant Waste Eyed for Green Building

This article is about using fly ash, waste products from large manufacturing plants.  Henry Liu, a retired civil engineering professor at the University of Missouri-Columbia, produced bricks which could be used in buildings.  These bricks are ecologically-friendly not only because they are recycled fly ash, but also because they do not need to be made from high temperature kilns like regular bricks.  Regular bricks (which also use fly ash) are baked in kilns, which produce enormous amounts of CO2.  This fly ash brick, however, uses high pressure to compile the powered ash together, thus producing no CO2 in the process.  But this biotechnology also has ethical issues such as: how will people feel living in a building made completely from manufacturing plant waste containing heavy toxins? 

http://news.yahoo.com/news?tmpl=story&cid=2627&ncid=2627&e=3&u=/ap/20060424/ap_on_sc/green_bricks_1

---