The Roots of Your Profits – Dr Elaine Ingham, Founder of Soil Foodweb Inc

This is the video by Dr. Elaine Ingham that I mentioned in this comment:

https://news.ycombinator.com/item?id=24828524

on the recent HN thread titled:

No-till no-herbicide farming system in trial since 1981

which is here:

https://news.ycombinator.com/item?id=24825567

I thought it worth posting as a separate topic because of the depth of the topic: the video over 1.5 hours long, IIRC.