I just listened a bit more on the interview for this book. Albert Bates is a permaculture designer. I bought mushroom plugs from him years ago. There are many uses that he talks about that not only help the individual, but the society as well. There are many uses for biochar that I didn't know about: in cement, in plastics, as a way to decrease EMF, to be fed to livestock, as a less expensive and more effective fertilizer for farmers. Many other countries such as China and places in Europe are way ahead of us in using biochar, partly because they don't have as many powerful commercial voices trying to convince people that climate change isn't happening. There are also uses for decreasing toxins in humans that seem quite promising as well. He is running a biochar tour in Finland in September, and they have an annual conference about biochar.