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[[Image:Joseph_mengel.jpg|thumb|300px|Josef Mengele]]
'''Josef Mengele''' (1911 - 1979) was a [[Germany|German]] [[physician]] and researcher who perpetrated the [[Holocaust]] in the [[Auschwitz]] death camp. Mengele had obtained a [[Ph.D.]] based on the study of [[racial]] differences in the anatomy of the jaw. He was one of the greatest supporters of [[Nazi]] theories of racial superiority with questionable research claims. Dr. Josef Mengele's [[evolution|evolutionary]] thinking was in accordance with [[Social Darwinism|social Darwinist]] theories that [[Adolph Adolf Hitler]] and a number of [[German]] academics found appealing.<ref>http://www.posner.com/book1.htm</ref> Mengele studied under the leading proponents the "unworthy life" branch of evolutionary thought.<ref>http://www.posner.com/book1.htm</ref> Mengele strongly supported the murder of the physically and mentally disabled. Dr. Mengele was one of the most notorious individuals associated with [[Nazi]] death camps and the [[Holocaust]].<ref>http://www.historylearningsite.co.uk/joseph_mengele.htm</ref> Dr. Mengele obtained a infamous reputation due to his experiments on twins while at [[Auschwitz]]-Birkenau.<ref>http://www.historylearningsite.co.uk/joseph_mengele.htm</ref> He was known as the "Angel of Death."
He performed experiments on humans in the [[concentration camp]]s attempting to prove that disease was the product of [[racism|racial inferiority]] and in order to [[eugenics|genetically engineer]] a new species, which was the aim of his organization, the Frankfurt based Institute of Hereditary Biology and Racial Hygiene. He amputated healthy limbs and performed other unusual operations on prisoners.