第359篇Cotton Ginning and Interchangeable Parts:The Legacy of Eli Whitney

第189篇Mass Production: Method and Impact

第414篇Breathing During Sleep

第8篇Latin America in the Nineteenth Century

第158篇Pleistocene Extinctions

第512篇Powering the Industrial Revolution

第575篇Colonizing the Americas via the Northwest Coast

第554篇The Rise of Teotihuacán

第586篇Star Death

第20篇The Greek City-States: Sparta and Athens