Biosphere 2: What Really Happened?

In the fall of 1991, I was sealed into an airtight, three-acre mini-world called Biosphere 2, a $150-million futuristic facility near the aptly named town of Oracle, Arizona. I joined seven other explorers in a daring, high-profile study of sustainability and the new science of biospherics-the study of closed systems that mimic Earth's environment.