Well we have covered the great killers of the 20th century, Mao, Stalin, and Hitler, and Pol Pot. What about the other side? Those whose efforts saved the most lives?
How about Norman Borlaug, founder of the Green Revolution in agriculture? Ever heard his name? This is what he achieved:
Norman Borlaug (1914-2009) received his PhD in plant pathology and genetics from the University of Minnesota in 1942. He took up an agricultural research position in Mexico, where he developed semi-dwarf, high-yield, disease-resistant wheat varieties.
During the mid-20th century, Borlaug led the introduction of these high yielding varieties combined with modern agricultural production techniques to Mexico, Pakistan and India. As a result, Mexico became a net exporter of wheat by 1963. Between 1965 and 1970, wheat yields nearly doubled in Pakistan and India, greatly improving the food security in those nations. These collective increases in yield have been labeled the Green Revolution, and Borlaug is often credited with saving over a billion people worldwide from starvation. He was awarded the Nobel Peace Prize in 1970 in recognition of his contributions to world peace through increasing food supply.
Later in his life, he helped apply these methods of increasing food production to Asia and Africa. More about Norman Borlaug at:
And this is Norman, who if you think about it saved ten times more lives than Stalin, Mao, Hitler, and even Pol Pot combined killed. Thank you Norman.