Serious Materials' Green Building Products Attract Serious Investment

I'm standing in a cavernous warehouse-like building in Sunnyvale, Calif., watching a run of freshly mixed and pressed drywall roll down a conveyor belt. "Here, touch it," urges Brandon Tinianov, a Silicon Valley inventor. "You see how it dries so quickly?" I put my hand down, and the moving slab of drywall is slightly wet. But five feet further down the line, the drywall is bone dry and cool to the touch. That's important because this drywall is different from the usual wallboard. It's called EcoRock, and the only company making it is Serious Materials, Tinianov's employer.