In 2011, on my "Radio Once More" program, I interviewed historian (and Research Associate at the Smithsonian Institution Archives) Marcel Chotkowski LaFollette, Ph.D.
We spoke about her 2008 book, Science on the Air: Popularizers and Personalities on Radio
and Early Television (University of Chicago Press).
http://www.amazon.com/Science-Air-Popularizers-Personalities-Television/dp/0226467597/
I enjoyed the book very much, and would like to make note of Dr. LaFollette's latest book, which will be published by the University of Chicago Press on December 21st. The book is titled Science on American Television: A History.
http://www.amazon.com/Science-American-Television-Chotkowski-LaFollette/dp/0226921999/