Much of human history is not written on paper but in our genes. Some genes show the true, unexpected origins of cultures and the desperate evolution to survive pandemics while others have remained unchanged for thousands of years. Ancient DNA also dispels myths but opens up new mysteries.
The Columbian Exchange The arrival of Europeans in the Americas caused widespread epidemics in native tribes. This first contact tragedy is called the “Columbian Exchange.” Everything started in 1492 when Christopher Columbus sailed to the New World. Before that, pathogens existed in America, including tuberculosis.