It's great and then he gets into peak oil, and it's suddenly not do great.. I personally confronted Richard heinberg at the local college library at a speaking engagement he had there.. I asked why we couldn't grow hemp, and he said there was no way we could produce enough.. and I thought.. when we think of what each individual needs, it's not that much and "yes we can".. if it's to sustain a MIC, then of course we can not.
At the 35 min point Robert Newman says there is only one group working to solve this problem. That group is established within my county, and I knew these people.. matter of fact.. they are Grangers too http://www.growbiointensive.org/index.html