Part1-Chapter2.0-2.4

Part Ⅰ: The Present: Foundation for the Past
Chapter Ⅱ: Evolution: Constructing a Foudamental Scientific Theory
2.0: Part1 intro & Big Questions ---- 00:00
2.1: The Theory of Evolution: The Context for Darwin ---- 09:00
2.2: The Theory of Evolution: Darwin's Contribution ---- 25:58
2.3: Since Darwin: Mechanism of Inheritance, the Evolutionary Synthesis, and the Discovery of DNA ---- 31:28