David Yarrow at USBI 2016

Those of us who were able to attend USBI 2016 last month were very impressed with the workshop by David Yarrow (See http://www.dyarrow.org/). David's 2-hour workshop was an epic journey "down the wormhole" of biochar. Wish you could have been there. However, the next best thing might be this article from the August 2016 issue of Acres Magazine:

Down the Wormhole: Customizing Biological Methods for Large-Scale Farming. By David Yarrow