Conversation so far:
What was Josef Mengele doing in South America?
Josef Mengele worked as a carpenter in Buenos Aires, Argentina, while lodging in a boarding house in the suburb of Vicente López.
Are there any other interesting aspects about the Josef Mengele article besides him working as a carpenter in Buenos Aires, Argentina?
In 1935, Josef Mengele earned a PhD in anthropology from the University of Munich.
Did Josef Mengele attend anywhere else besides the University of Munich?
In January 1937, Josef Mengele joined the Institute for Hereditary Biology and Racial Hygiene in Frankfurt, where he worked for Dr. Otmar Freiherr von Verschuer.
Did Josef Mengele teach?
As Dr. Otmar Freiherr von Verschuer's assistant, Josef Mengele focused on the genetic factors that result in a cleft lip and palate, or a cleft chin.

Question: What did this research earn him?
Self-contained rewrite: What did Josef Mengele's research on the genetic factors that result in a cleft lip and palate, or a cleft chin, earn him?