Ok but incomplete documentary.
They spend half the time on the group's history and the building of BIO2. The rest is only about BIO2 during its first use 1991-1993, the fighting of the control of the BIO2 company and what some the original group of people are doing today.

You only get 4 sentences on a black screen about what happened the next decades.

*No video how it looks now outside/inside today/during the decades.
*No info what's been done in BIO2 since 1993.
[spoiler]
*No info about a the second closure experiment.
"The second closure experiment achieved total food sufficiency and did not require injection of oxygen."
*No info why the CO2 spiked.
"Microbes in our organically enriched soils had produced carbon dioxide at a greater rate than our young plants could produce oxygen via photosynthesis. We discovered that most of the missing oxygen was converted to CO2 and had been absorbed by the unsealed concrete in our habitat."[/spoiler]