Only 32-years old, Herren then went to work for the International Institute of Tropical Agriculture (IITA) in Ibadan, Nigeria.
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There he built the Biological Control Program and designed and implemented the largest biological pest-management known to date fighting the Cassava Mealybug (Phenacoccus manihoti) and saving an estimated 20 million lives by averting a major food crisis.
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Dr Herren was awarded an honorary professor title (Prof. h.c.) from Hubei University, Wuhan, PRC in 2004 and received an honorary doctorate (Doctor es Science Honoris Causa) from Kenyatta University, Nairobi, Kenya
Hans Christian Andersen | Hans Holbein the Younger | Rudolf Nureyev | Hans Zimmer | Hans Werner Henze | Rudolf Steiner | Rudolf Virchow | Hans Memling | Rudolf Hess | Hans Pfitzner | Hans Küng | Hans Conried | Rudolf II, Holy Roman Emperor | Hans Knappertsbusch | Hans Magnus Enzensberger | Hans-Dietrich Genscher | Hans Blix | Rudolf Kempe | Hans Zender | Hans Scholl | Hans Hofmann | Hans Christian Ørsted | Rudolf Hilferding | Rudolf | Hans Raj Hans | Hans Habe | Hans Baldung | Baron Hans Heinrich Thyssen-Bornemisza | Hans von Ohain | Hans van Manen |