Inside Biosphere 2

In the Arizona desert, scientists conduct studies and experiments aimed to help us better understand our environment and what sort of things are happening to it due to climate change. The location is Biosphere 2, an immense structure that contains a replica ocean, savannah, and rainforest, among other Earth biomes. It's a unique take on the Scientists in the Field mission statement -- in this case, the lab is a replica that allows the scientists to conduct large-scale experiments that would otherwise be impossible.