- 
  
  
 - 
  
  
 - 
  
  Gabriel Fahrenheit created the first mercury thermometer
 - 
  
  
 - 
  
  Edward Jenner developed a vaccination for smallpox in 1796
 - 
  
  Dr. James Simpson began using chloroform as an anesthetic
 - 
  
  Joseph Lister started using disinfectants and antiseptics during surgery to prevent infection
 - 
  
  
 - 
  
  Louis Pasteur created the vaccine for rabies
 - 
  
  Wilhelm Roentgen discovered x-rays
 - 
  
  Almroth Wright developed the vaccine for typhoid fever
 - 
  
  
 - 
  
  Fredrick Banting and Charles Best discovered and used insulin to treat diabetes
 - 
  
  Sir Alexander Flaming discovered penicillin
 - 
  
  
 - 
  
  
 - 
  
  
 - 
  
  FDA approved birth control
 - 
  
  
 - 
  
  
 - 
  
  
 - 
  
  
 - 
  
  
 - 
  
  First test tube baby was born in England
 - 
  
  
 -