Spaceship Earth review – 90s Arizona eco-experiment looks like reality TV

This absorbing documentary tracks how participants in the Biosphere 2 project lived, grew food and disagreed in giant biodomes

If ever a documentary was in tune with the spirit of lockdown it is this very absorbing film about Biosphere 2 - a colossal eco-experimental project in the Arizona desert in the early 90s, which had its roots in 60s counterculture and which I knew nothing about before this.

My ignorance was so complete, in fact, that for the first few minutes of this film I kept suspecting some kind of docu-spoof. But it's all real, right up to the disclosure of a horribly familiar villain right at the end, whose identity it would be unsporting to reveal.