Unit 01. Greek Philosophers of the Golden Age
Unit 02. The Age of Discovery
Unit 03. Our Shifting Earth
Unit 04. Dance Language Among Honey Bees
Unit 05. The Invention of the Modern Printing Press
Unit 06. Decoding the Rosetta Stone
Unit 07. The Great Depression
Unit 08. Understanding Hurricanes
Unit 09. What Are GMOs?
Unit 10. The History of Salt
Unit 11. The Cultural Advances of Hellenism
Unit 12. Impressionism
Unit 13. The Great Barrier Reef
Unit 14. The Frozen Continent
Unit 15. The Birth of the Skyscraper
Unit 16. The Placebo Effect
Unit 17. Greenwashing
Unit 18. Predicting Volcanic Eruptions
Unit 19. A Star is Born
Unit 20. Inventing the "Talkie"