Bill Carroll, Ph.D.

Bill is an Adjunct Professor of Chemistry at Indiana University, Bloomington, IN and lives with his wife Mary in Dallas, TX. They have three children, Allison, Will and Quin.

He has been President and Chair of the Board of the American Chemical Society, the world’s largest single-discipline scientific professional organization with over 150,000 members.

In 2015, Bill retired after a 37-year career in industry and now spends his time as a career counselor for the IU Chem Department and a globally recognized industrial chemistry consultant through his company, Carroll Applied Science, LLC. His first love for 60 years, however, has been the pop charts. As an author of peer-reviewed articles and the co-author with Dann Isbell of the highly-rated Ranking the ‘70s, he is fulfilling his dream of applying science-based analytics to popular music.

More at


Dann Isbell


Dann Isbell has been fascinated by the charting of pop music and its ties to popular culture for more than fifty years. Born and raised in Southern California, Dann relocated to Taiwan where he has lived for more than thirty years. He and his wife, Jessica, have raised two sons, Jeffrey and Ian.  

Dann retired in 2016 from his teaching position in the Department of English at Taiwan’s National Central University where he taught courses in English and linguistics since 1984. 

Dann started the Ranking series with an academic version of Ranking the '60s published in 2009.  For the past five years, he has been a sometimes contributor of special programming to Sirius/XM Satellite Radio.