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The Delicate Balance, Part 1: Technology is Not Always the Answer
02:00

The Delicate Balance, Part 1: Technology is Not Always the Answer

The Biosphere 2 experiment attempted to create a human engineered self sustaining environmental system. The experiment served to illustrate how little is understood about the workings of our natural ecosystems services.

Ecology: Biosphere 2: The Mechanics of a Closed System
05:36

Ecology: Biosphere 2: The Mechanics of a Closed System

Biosphere 2 was built as a living laboratory to help explain how humans interact with the earth's systems and gauge their impact on the environment. The structure, located in the Arizona desert, relies on huge inputs of energy, sophisticated electro...

Ecology: Biosphere 2: Studying Extinction First-hand
05:36

Ecology: Biosphere 2: Studying Extinction First-hand

The accidental introduction of a common greenhouse ant into Biosphere 2 resulted in the loss of their pollinators. The impact of the loss was felt immediately in the miniature biosphere. The size of the earth and the redundancies that exist in the s...

Ecology: Biosphere 2: The Effects of El Nino
03:34

Ecology: Biosphere 2: The Effects of El Nino

When an El Niño event occurred during the two year Biosphere experiment, it created surprising and unforeseen problems with food production. The unusually cloudy and rainy conditions resulted in drastically reduced crop yields. Many scientists beli...

Ecology: Biosphere 2: Elevated Carbon Dioxide Levels
01:59

Ecology: Biosphere 2: Elevated Carbon Dioxide Levels

By overstocking the soil with organics, an excess of carbon dioxide production was created in Biosphere 2. The elevated levels of carbon dioxide affected the pH of the ocean water and the growth and productivity rates of plants. The greenhouse gases...