My guests this week are Sara & Rich Combs. A few years ago, they transplanted themselves from the bustle of San Fransisco to the quiet of Joshua Tree, California. But in giving themselves time to slow down, they have left themselves open to experiencing an intense drama of living in close proximity to their natural environment. They are now the owners of three properties there, all of which can be rented out as creative retreat spaces. Their book, “At Home in Joshua Tree: A Field Guide to Desert Living,” takes us through four lessons, or mantras, that they’ve incorporated into their work as designers since making the desert their home. In our conversation we talk about the mantras as well as the various environmental facts that have become entwined with their lifestyle and overall aesthetic. I start by asking them how the decision to move to Joshua Tree came about.