The book is Sustainable Energy Without The Hot Air, a free download from http://withouthotair.com http://withouthotair.com. An excellent resource. I agree with

The book is Sustainable Energy Without The Hot Air, a free download from http://withouthotair.com http://withouthotair.com. An excellent resource. I agree with avoiding packaging and more. Since I started avoiding food with packaging, I've reduced my landfill garbage to having to empty my household garbage two or three times per year. With an increase in deliciousness, convenience, and saving money. Here are a couple posts on it, for those interested: http://joshuaspodek.com/avoiding-food-packaging http://joshuaspodek.com/avoiding-food-packaging http://joshuaspodek.com/want-run-leaner-waste-less-literally-produce-less-waste http://joshuaspodek.com/want-run-leaner-waste-less-literally... These small practices contributed to a bigger practice of not flying for a year (and counting): https://www.inc.com/joshua-spodek/365-days-without-flying.html https://www.inc.com/joshua-spodek/365-days-without-flying.ht... so discovering the joys and rewards of consuming less have compounded, at least in my experience. I'm also teaching a course in systems thinking, always seeking ways to apply more.