知识世界

History:Super Structures — The Panama Canal

In the deep jungle of Central America， people fight with nature for an engineering miracle. Its romaunt atonishes us and its size is far beyond imagination of human. Poeple have excavated the deepest river trough， built the largest dam， and poured supreme concrete structure， which has never been seen in the world. This miracle is the Panama Canal.

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  History： Secrets of the Anasazi

  
• 02

  History： Alfred Nobel and Dynamite

  
• 03

  History： What The Ancients Did for Us — The Greeks

  
• 04

  History： Mysterious Places — Chartres France

  
• 05

  History： Seven Wonders of Ancient Rome

  
• 06

  History： The Egyptians

  
• 07

  History： Planck and Quantum Physics

  
• 08

  History： Mysterious Places — Pompeii Italy

  
• 09

  History： Transportation Achievements

  
• 10

  History： Poisoned