After reading Bill McKibben’s The Unsung Solution (November/December 2007), a reader writes:
As a folk musician, I took Bill McKibben’s statement that there were “no folk songs about waste heat recovery” as a personal challenge. The resulting opus can be heard at my website, under the heading “free songs.”
As listeners may surmise, it was written and recorded in less than an hour.
If you click on that link and scroll down to “Waste Heat Recovery” you can listen to her song.