Ep 9. Secrets of Biosphere 2

In season 12 episode 9 of What on Earth?, viewers are taken on a journey to explore the secrets of Biosphere 2, a massive and unique scientific experiment located in the Arizona desert. Biosphere 2 was built in the late 1980s as a self-sustaining, closed ecological system that would simulate life on Earth.

The episode begins by introducing viewers to the reasons behind the construction of Biosphere 2 – to better understand the dynamics of Earth’s natural systems so that we may better protect our planet. The experiment consisted of eight interconnected "biomes" that were designed to mimic different Earth environments, such as rainforest and ocean.

The episode explores how the Biosphere 2 experiment differed from other ecological experiments at the time, as it aimed to entirely sustain and isolate its inhabitants from the outside world. Despite this lofty goal, the experiment was plagued with difficulties right from the start.

The documentary delves into the challenges faced by the eight Biosphere 2 dwellers during their two-year stay in the sealed-off ecological system. At one point, the crew found themselves in a bitter struggle with a group of cockroaches that had exploded in population, threatening the balance of the system. The show also explores the psychological toll the experiment took on its inhabitants, some of whom became wary of the increasing isolation from society.

Viewers are given insight into the scientific breakthroughs that came out of Biosphere 2, including discoveries on how air moves through Earth’s biosphere and how organisms adapt to certain environmental conditions. However, they are also introduced to controversies around the experiment, including allegations of scientific impropriety and the political motivations behind its funding.

Throughout the episode, stunning footage of Biosphere 2’s eight biomes and alien-looking structures reveal its grandeur and complexity. The structure's verdant interior includes lush mangrove swamps meeting cool, mountainous forests and an 850,000-gallon ocean. Biosphere 2's unique and beautiful design capture the imagination of viewers as they witness closed systems operate in harmony.

Later in the show, viewers are transported back to present-day Biosphere 2, which is now operated by the University of Arizona. The episode takes a closer look at the research currently being conducted at Biosphere 2, including experiments on how coral reefs will survive in a changing climate.

The episode concludes with an exploration of the ongoing legacy of Biosphere 2 and what its groundbreaking research may mean for the future of humanity. The example that Biosphere 2 set is a testament to the importance of independent scientific inquiry, our intimate connection with the natural world and our responsibility to protect it.

Overall, What on Earth? season 12 episode 9 – Secrets of Biosphere 2 – is a fascinating exploration of one of the most ambitious ecological experiments in history. Its beauty and tragedy will leave viewers captivated and thoughtful about our planet and our future.