Mighty, elemental forces molded North America. Fiery eruptions, titanic floods, the grinding of great ice sheets, and massive impacts from space all shaped our land. Now, for the first time, NOVA—a production of WGBH Boston—presents a bold and sweeping three-billion-year biography of our continent and how it came to be in an epic new three-hour series. Hosted by renowned paleontologist Kirk Johnson, this spectacular road trip through our nation’s tumultuous deep past sets out to answer three fundamental questions: How was the continent built? How did life evolve here? And how has its spectacular landscape shaped human lives and destinies?