Biosphere 2 was initially put together from a holistic viewpoint, trying to maximize the diversity and it came from a realization that we don't really understand ecosystems well enough, that we can recreate them. I'm Joost Van Haren and I'm an Assistant Research Professor at Biosphere 2 at the University of Arizona, and we are, right now we are in the rainforest at Biosphere 2. And I manage the rainforest, the research in the rainforest, and I also do research in the tropics in the Amazon basin. Even though we're in Arizona, we're in the middle of the desert of Arizona. We are in a high humidity place with a relatively high temperature, and that's one of the things actually here about Biosphere 2. That's very cool if you think about climate change and what's going to happen to tropical forests in the real world, so we can use this as a test case of what might happen 100 years or 200 years from now to tropical forests. We then make measurements here at Biosphere 2, and then use models that we use for the real world to understand how does the ecosystem function and maybe how it cycles water, how it cycles carbon, how it grows and so forth and then bring those models here to Biosphere 2. What we hope you would learn and understand better is how active rainforests are, and how large an influence rainforests have on the global climate. The other would be to have a better sense of how do tropical forests respond to climate change. Overall, better learning and understanding of how does carbon, and water, and nutrients, how do these elements cycle through forests? Biosphere 2 is a perfect place to understand how does the biology interact with the atmosphere. So, whatever the biology does and how it affects the atmosphere is magnified in here. So in a way, you can see Biosphere 2 as a giant magnifying glass on the interaction between biology, ecosystems, and the atmosphere.