Smithsonian Secretary Lonnie G. Bunch III is no administrative assistant. He\u2019s the head of the largest museum, education, and research complex in the world. He\u2019s also the first historian to lead the Smithsonian. In our season finale, we talk with Secretary Bunch about two stories of people overcoming tremendous obstacles to make a change and explore what the past can teach us about today\u2026and tomorrow. \xa0