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'''Dichloro diphenyl trichloroethane''', commonly known as DDT, is a synthetic organic chemical compound that was first made in 1874 by Othmar Zeidler, an German-Austrian chemist.

'''Dichloro-diphenyl-trichloroethane''', commonly known as DDT, is a synthetic organic chemical compound that was first made in 1874 by Othmar Zeidler, an German-Austrian chemist.

In 1939, Paul Hermann Müller<ref>In 1948 Müller was awarded the Nobel Prize in Physiology or Medicine "for his discovery of the high efficiency of DDT as a contact poison against several arthropods."</ref>, a Swiss chemist working for Geigy Pharmaceutical, discovered its pesticidal qualities.  It was soon put to good use by Allied forces in World War II to help control [[malaria]] and [[typhus]], especially in the Asian and Pacific theatres.  

In 1939, Paul Hermann Müller<ref>In 1948 Müller was awarded the Nobel Prize in Physiology or Medicine "for his discovery of the high efficiency of DDT as a contact poison against several arthropods."</ref>, a Swiss chemist working for Geigy Pharmaceutical, discovered its pesticidal qualities.  It was soon put to good use by Allied forces in World War II to help control [[malaria]] and [[typhus]], especially in the Asian and Pacific theatres.