Conversation so far:
Where did Isaac Asimov go to school?
Asimov attended New York City public schools from age 5, including Boys High School in Brooklyn.
Graduating at 15.
Did he further his education?
he went on to Seth Low Junior College, a branch of Columbia University in Downtown Brooklyn designed to absorb some of the Jewish and Italian-American students.
What did he study there?
Originally a zoology major, Asimov switched to chemistry after his first semester as he disapproved of "dissecting an alley cat".
Where else did he go to school?
After Seth Low Junior College closed in 1938, Asimov finished his BS degree at University Extension (later the Columbia University School of General Studies) in 1939.

Question: What did he get a bachelors in?
Self-contained rewrite: What did Asimov get a bachelors in?