¶ … People From History That Impacted the World in a Positive Way Three People from History

Three People from History who impacted the World in a Positive Way

Ross Granville Harrison (1807 -- 1959)

Ross Granville Harrison was an American zoologist. He is known for his discovery of a method of growing cells outside of the body. In his famous experiment carried out in 1906 he placed a piece of a frog's embryonic nerve tissue into a drop of frog lymphatic fluid, and saw that the nerve tissue did not die, but rather continued to grow. (Ross Granville Harrison) The method that Harrison developed from this experiment was to form the foundation of the tissue culture technique used in modern medicine and in medical research. This technique has become an extremely important part of contemporary medical research as it allows for "…the study of isolated living cells in a controlled environment." (Ross Granville Harrison).

Harrison did not win a Nobel Prize for his discovery but many scientists and scholars felt that he should have received the highest accolade for his groundbreaking work. There is little doubt that the results of his research were extremely beneficial to medicine and the health of mankind. For example, one of his students devised a test for mumps using the technique devised by Harrison. His methodology was also used in the growth of polio virus cultures, leading to development of polio vaccine. (Ross Granville Harrison).

What is striking about the biography of this scientist is both his intellectual curiosity as well as his sense of ethics and morality. His intense intellectual curiosity can be in his continual research on scientific and biological problems. This is evident in that...

He had strong moral and ethical views. This is evident in his opposition to the British government during the First World War, when he objected to that government's blockade of Red Cross shipments of hospital supplies intended for the Germany, and Bulgaria. After his retirement from Yale University he continued his active life as chairman of the National Research Council.
2. Sir Alexander Fleming (1881 -- 1955)

Alexander Fleming was a famous Scottish bacteriologist and winner of the Nobel Prize for his discovery of penicillin. He was born in Ayrshire in Scotland on 6 August 1881 and went to London at the age of thirteen to study medicine. He qualified in 1906.

His discovery of penicillin occurred when he was studying the influenza virus in 1928. (Alexander Fleming: 1881-1955) During his experiments he noticed mould growing from some culture dishes that were being used to grow staphylococci. What was extremely interesting was that the mould had "…created a bacteria-free circle around itself." (Alexander Fleming: 1881-1955) Fleming realized the properties of this mould and named it penicillin. This discovery was eventually developed as an effective medicine by Howard Florey and Ernst Chain. (Alexander Fleming: 1881-1955) Penicillin was also eventually mass produced in the 1940s. (Penicillin)

As one study notes; "The discovery…