For millions of years, the two main hemispheres of planet earth were separated by an impassible ocean. North/South America and Eurasia/Africa, two divergent ecosystems, food chains, and human civilizations. . . Then one day in 1492, a guy named Columbus passed that impassible ocean, and began the momentous and tumultuous process of bringing the Old World and the New World back together, into one.

Human civilization and the ecosystems of earth itself would never be the same.

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Theme music by Michael Levy of Ancient Lyre. This rendition of the Hurian Hymn and the whole album “An Ancient Lyre” and much more is available from all major digital music stores and streaming sites.

1491 by Charles Mann

harvard.edu; The Columbian Exchange: A History of Disease, Food, and Ideas

Giancarlo Casale; The Ottoman Age of Exploration

Encyclopedia Britannica: The Age of Discovery

Lewis Dartnell; Origins: How the Earth Made Us