Nonfiction

Carson takes readers into Biosphere 2, the research facility designed to be a self-sustaining model of Earth's environments. There's brief coverage of the innovative engineering and original mission of the facility (complete with photos of the first jumpsuit-clad human "biospherians" who were sealed inside from 1991 to 1993), but the focus is primarily on current research under the direction of scientists at the University of Arizona. The ability to control environmental conditions within the contained rainforest, ocean, and giant soil laboratory allows researchers to investigate questions in earth science—prominently, those related to climate change