Record -- The Rise of Trees and How They Changed Paleozoic Atmospheric CO2, Climate, and Geology -- Atmospheric CO2 During the Late Paleozoic and Mesozoic: Estimates from Indian Soils -- Alkenone-Based Estimates of Past CO2 Levels: A Consideration of Their Utility Based on an Analysis of Uncertainties -- Atmospheric CO2 Data from Ice Cores: Four Climatic Cycles -- Atmospheric CO2 and 13CO2 Exch…