知识世界

History:Sex Hormone and Contraceptive

Scientists were always trying producing safe contraceptives. The German chemist Adolf Butenandt became one of the first scientists to isolate the sex hormone and reveal the molecule structure. In doing so ， he laid the chemical foundations for the pill.

• 01

  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

  
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  History： Poisoned