Eight people take part in an ecological experiment in 1990s Arizona. Inspired by real events, The Terranauts places human behaviour under the microscope to spellbinding effect Linda is desperate to be one of the lucky eight chosen to take part in the world's most ambitious ecological experiment. Gazing longingly at Ecosphere II, which rises like a spaceship from the Arizona desert, Linda knows she can survive under its glass dome. Competition is fierce between the hopefuls, among them smooth-talking PR man Ramsay, and Dawn, a naive beauty. All are certain that they would never, ever, break closure before two years are up - unlike their discredited predecessors. Inside this humid microcosm, the terranauts' labours over crops and livestock, their battles with creepy crawlies, their hostilities and sexual dalliances are all observed by the tourists who come to gawp, Mission Control's cameras and the watchful eye of the media. As the crew struggles to control nature, and hunger sets in, the snake in this Eden starts to look unmistakably human.