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Scientists Saved Million Lives

Updated: Jun 5, 2020

Before the 20th century, many microbes and diseases were ruling the world. Early 20th century, many scientists discovered antibiotics and vaccines which saved million lives. Leads into revolution in Medicinal field.

Alexander Fleming - Discovery of Penicillin from Penicillium notatum.

Alexander Fleming. Credit: Corbis via Getty Images

Penicillin is the most widely used antibiotic in the world. The discovery of penicillin changed the world of medicine immensely. During World War 2 penicillin was used to combat infections in soldier. This discovery saved nearly 200 million lives.

Jonas Edward Salk - Discovered Polio vaccine in 1955

Jonas Salk © Yousuf Karsh

Polio was very common in early 20th century. Until Jonas Salk discovered Polio vaccine. Jonas Salk discovered and developed Polio vaccine in April 12, 1955. But he wont take the patent of polio vaccine. If he took patent for his invention, he would have earned $ 7 billion per year.

When someone interviewed Salk and asked, who owned the patent of Polio? Salk said that “well, the people, I would say”.

Karl Landsteiner - Identified human blood groups A, B, & O in 1900

Karl Landsteiner

Identification of blood groups is based on antigens present on the surface of RBCs. This discovery was the landmark in medicinal field i.e., very helpful and effective in blood transfusion. Every 2 seconds somebody needs blood. In some cases, people lose their lives because of lack of donor blood. His contribution saved million lives by matching blood groups during blood transfusion.

Wilhelm Conrad Roentgen - Discovery of X - ray.


In 1895, Roentgen produced and detected electromagnetic radiation in a wavelength range known as X-rays. Today the X-rays are very useful in checking for bone fractures, detection of Pneumonia and breast cancer.

Joseph Edward Murry - Kidney transplantation in 1954

Joseph Murray. Copyright-

An american plastic surgeon who performed the first successful human kidney transplantation on identical twins. This lead to the transplantation of many organs in human body such as eye, heart, liver, lungs etc..,

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