The "Nu-Barrel" fermentation tank developed by Steve Rosenblatt at Sonoma Cast Stone allows for precise control over the amount of oak the wine is exposed to. The suspended wood slats can be added, subtracted or removed altogether at any time in the process.
Credit Bruce Robinson, KRCB
One of the most common building blocks in the developed world—cement—is also hugely polluting. So a Petaluma businessman is working to scale up an alternative to it.