Paul Hermann Müller also known as Pauly Mueller (January 12, 1899 – October 12, 1965) was a Swiss chemist

Chemist

A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

 and Nobel laureate. In 1948 he received the Nobel Prize in Physiology or Medicine

Nobel Prize in Physiology or Medicine

The Nobel Prize in Physiology or Medicine administered by the Nobel Foundation, is awarded once a year for outstanding discoveries in the field of life science and medicine. It is one of five Nobel Prizes established in 1895 by Swedish chemist Alfred Nobel, the inventor of dynamite, in his will...

 for his 1939 discovery of insecticidal qualities and use of DDT

DDT

DDT is one of the most well-known synthetic insecticides. It is a chemical with a long, unique, and controversial history....

 in the control of vector diseases such as malaria

Malaria

Malaria is a mosquito-borne infectious disease of humans and other animals caused by eukaryotic protists of the genus Plasmodium. The disease results from the multiplication of Plasmodium parasites within red blood cells, causing symptoms that typically include fever and headache, in severe cases...

 and yellow fever

Yellow fever

Yellow fever is an acute viral hemorrhagic disease. The virus is a 40 to 50 nm enveloped RNA virus with positive sense of the Flaviviridae family....

.

Müller was born in Olten

Olten

Olten is a town in the canton of Solothurn in Switzerland and capital of the district of the same name.Olten's railway station is within 30 minutes of Zurich, Bern, Basel, and Lucerne by train, and is a rail hub of Switzerland.-History:...

, Solothurn

Solothurn

The city of Solothurn is the capital of the Canton of Solothurn in Switzerland. The city also comprises the only municipality of the district of the same name.-Pre-roman settlement:...

 and was raised in Lenzburg

Lenzburg

Lenzburg is a town in the central region of the Swiss canton Aargau and is the capital of the district of the same name. The town, founded in the Middle Ages, lies in the Seetal valley, about 3 kilometres south of the Aare river. Lenzburg and the neighbouring municipalities of Niederlenz and...

, a village in Aargau

Aargau

Aargau is one of the more northerly cantons of Switzerland. It comprises the lower course of the river Aare, which is why the canton is called Aar-gau .-History:...

. He received his PhD

PHD

PHD may refer to:*Ph.D., a doctorate of philosophy*Ph.D. , a 1980s British group*PHD finger, a protein sequence*PHD Mountain Software, an outdoor clothing and equipment company*PhD Docbook renderer, an XML renderer...

 in 1925 and went to work for J. R. Geigy AG in Basel

Basel

Basel or Basle In the national languages of Switzerland the city is also known as Bâle , Basilea and Basilea is Switzerland's third most populous city with about 166,000 inhabitants. Located where the Swiss, French and German borders meet, Basel also has suburbs in France and Germany...

 where he made his discovery in the autumn of 1939. His DDT patent was recorded in Switzerland in 1940, the United States in 1943 and Australia in 1943.

Müller died in Basel

Basel

Basel or Basle In the national languages of Switzerland the city is also known as Bâle , Basilea and Basilea is Switzerland's third most populous city with about 166,000 inhabitants. Located where the Swiss, French and German borders meet, Basel also has suburbs in France and Germany...

in 1965.