http://hometownheroesrun.com/lib/hvac-fundamentals-volume-3-air-conditioning-heat-pumps-and-distribution Along I-40 I had to pull off to the side of the road to get a glimpse of a plant. I was fairly sure it was Yucca brevifolia, a Joshua Tree. It is a signature plant of the Mojave Desert, and is as far as I know naturally absent from the Sonoran Desert area around […]