1901 Karl Landsteiner introduces the system to classify... - Deepstash

  • 1901 Karl Landsteiner introduces the system to classify blood into A, B, AB, and O groups
  • 1913 Dr. Paul Dudley White pioneers the use of the electrocardiograph - ECG
  • 1921 Edward Mellanby discovers that lack of vitamin D in the diet causes rickets
  • Earle Dickson invented the Band-Aid
  • 1922 Insulin first used to treat diabetes
  • 1923 First vaccine developed for diphtheria
  • 1926 First vaccine developed for whooping cough
  • 1927 First vaccine developed for tuberculosis

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timeline

“I like to challenge myself and give myself a timeline. It pushes me to be more creative and actually do these things, not just dream about them.”

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Music and Productivity

Learn more about scienceandnature with this collection

How to choose the right music for different tasks

The benefits of listening to music while working

How music affects productivity

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