ecobrique2A French company is winning awards for innovation with its building materials that are made from sewage! Introducing, Ecobrique:

vBc 3000 has patented a process of making ceramic products from sewage sludge. Partially dried sewage sludge is mixed with clay to create bricks or expanded clay aggregates, such as lightweight concrete. The bricks can be fired in traditional kilns and the clay aggregates made in the rotary furnaces that they use in cement factories. The resulting materials are lightweight and as durable as traditional building materials…The first commercial production of the Ecobrique is due to start in 2007 (Go to TreeHugger for more details)