The final case study takes us deep into the Californian desert, where an unlikely collection of people gather around an unlikely story. If you find yourself driving through California’s Mojave desert, the scorching sun and the flat, scrubby terrain can make you wonder if you’re on another planet. But arrive at one unremarkable crossroads in the town of Landers, 40 miles north of Palm Springs, and a bone-white, spaceship-shaped dome, rising above the flatness of bleached sand and brown tumbleweeds, will heighten the feeling.