Summary: Seems everything's going green these days -- even bricks! National Science Foundation grantee Henry Liu is developing bricks made from fly ash (a residue from coal-fired power plants). The new brick on the block holds promise for great ecological benefits over its clay counterpart. Liu says manufacturing of these "green" bricks conserves energy, costs less, and doesn't contribute to air pollution or global warming... plus, it puts to use some of that waste heap (piling up to nearly 70 million tons each year!). Additional safety testing of the material and preparing it for the market is underway. Perhaps soon... "green" house could have a whole new meaning.
