I find this comment in conflict with very old evidence. You say “Carbon dioxide has no significant greenhouse effect above 80 ppm” yet the greenhouse effect was first proven in the 1850s, twice in succession, by two independent scientists, one male and one female. Thoughts?
My driveway is very long. I periodically consider some sort of buried vacuum tube system. It would be an engineering feat to eliminate the need for our postie to manually load a pod, but it sure would be way cool. I’ll get an idea someday :-)
Lol, “a rube with too much loot” maybe? :-) God bless Opus