[[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 Hitler]] and a number of [[German]] academics found appealing.<ref>http://www.posner.com/book1.htm</ref> Dr. Joseph 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> 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. After the war he fled to [[Brazil]] where he drowned due to a stroke while swimming.