Did the Columbian Exchange save Europe or destroy the Americas? That is the question at the heart of this classroom podcast product for IB DP History. In five voices across four acts, students explore one of the most consequential -- and most debated -- events in world history: the biological, economic, and cultural collision set in motion by Columbus's 1492 voyage. Students hear from DR. ELENA VASQUEZ, a colonial historian who brings the population data (25 million to 1 million in central Mexic