Like concrete and glass, drywall has high embodied energy, says Steve Weiss, of Sunnyvale, Calif.-based drywall manufacturer Serious Materials. But his company has something different in mind. Its new EcoRock wallboard requires 90 percent less energy to produce because its core is made from “commonly available minerals with high recycled content” that essentially “bake themselves,” he says. Better still, EcoRock looks and feels like standard wallboard and will cost the same as premium drywall when it hits the market in late 2008. Serious Materials, 800.797.8159; www.seriousmaterials.com.