If you're in need of a 700-gallon rainwater harvesting tank, ultra-low-flow toilets or porous driveway pavers, then Moscone Center is the place this week.
The occasion is Greenbuild, a conference organized by the United States Green Building Council and being held for the first time in San Francisco. With 35,000 people expected to attend and more than 1,000 companies exhibiting what they claim are eco-friendly products, the event also testifies to the ever-widening cultural presence of sustainable design.