Movement I: Earth : Carbon, the Element of Crystals. Before Earth
Prelude: Earth emerges and evolves
Exposition: Deep Earth carbon
Development: Carbon worlds
Conda: unanswered questions
Movement II : Air : Carbon, the Element of Cycles. Introduction: Before air
Arioso: The origin of Earth's atmosphere
Intermezzo: The deep carbon cycle
Arioso, Da Capo: Atmospheric change
Coda: The known, the unknown, and the unknowable
Movement III: Fire : Carbon, the Element of Stuff. Introduction: Material world
Movement IV: Water : Carbon, the Element of Life. Introduction: The primeval Earth
Exposition: Origins of life
Development: Life evolving (theme and variations)
Recapitulation: The human carbon cycle
Finale: Earth, air, fire, and water.
