Boas first traveled to Baffin Island in 1883 to study the native Inuit to see what role the environment plays in their migrations. He published his findings in 1888. Boas returned to Germany for a time, but due to rising antisemitism he decided to emigrate to the United States. He worked as an editor for "Science" and as a docent of anthropology at Clark University. He left the university in 1892. He went north to collect ethnographic material for the 1893 World's Colombian Exposition. After the exposition the material was given to the Field museum in Chicago, here Boas became the curator for anthropology. During this time Boas became involved in the Fin de Siècle debates. It was here he argued for separating natural sciences from the humanities. He also began the ground work that would eventually grow into historical particularism: the idea that every aspect of a culture has a unique history.