We prefer to talk about 100% renewable instead of zero carbon. When you say zero carbon, you are not positively defined.
William McDonoughCarbon in your body - that's good thing. In a tree, it's good. In the atmosphere, it's a bad. Nature wants to sequester carbon in biota. And when we burn it, we release it. It's the wrong system.
William McDonoughWe are not a green standard, we are a quality standard. We're different, we're multi dimensional.
William McDonough