Food is key. This inspired me to re-read the 4 pages on Food in "Sustainable Energy without the hot air": https://www.withouthotair.com/c13/page_76.shtml https:

Food is key. This inspired me to re-read the 4 pages on Food in "Sustainable Energy without the hot air": https://www.withouthotair.com/c13/page_76.shtml https://www.withouthotair.com/c13/page_76.shtml (ps I just put this great book up on github. The author passed away, would love ideas to re-release the CC content. Specifically, merging the short Food chapter into a nicely formatted single medium-type article would be a good step for readability: https://github.com/titojankowski/sustainable_energy_without_the_hot_air/pulse https://github.com/titojankowski/sustainable_energy_without_...)