About the Santa Fe Institute -- Thinking about Biology: An Introductory Essay -- The Emergence of Life -- Defining the Transition to Life: Self-Replicating Bounded Structures and Chemical Autopoiesis -- The Organism as a Dynamical System -- Designing Bacteria -- Structural Patterns in Macromolecules -- Development as a Robust Natural Process -- Development as a Robust Natural Process -- Generation of Morphological Patterns: The Mechanical Ways to Create Regular Structures in Embryonic Development -- Gastrulation and the Evolution of Development -- Biological Organization, Coherence, and Light Emission from Living Organisms -- What is the Immune Network For? -- Randomness and Pattern Scale in the Immune Network: A Cellular Automata Approach -- Species and Societies: Communication Among Multiple Agents -- Self-Organized Criticality and Gaia -- Requirements for Evolvability in Complex Systems: Orderly Dynamics and Frozen Components -- Modeling the Behavior of Ant Colonies as an Emergent Property of a System of Ant-Ant Interactions