Honors in an Independent Studies Program, concentrating on theoretical physics and philosophy.

In 1995 he moved to the United Kingdom where he worked as a lecturer at University College London's Department of Science and Technology Studies, becoming a professor in 2008.

[1] Chang moved to the University of Cambridge in 2010, becoming the Hans Rausing Professor of History and Philosophy of Science.

[2] He worked as a consultant on BBC Four's series Shock and Awe: The Story of Electricity and Channel 4's Genius of Britain: The Scientists Who Changed the World.

[4] He appeared on EBS's series Chang Hasok's Science Meets Philosophy from February to May 2014, where he delivered lectures in Korean.