#27 Jennifer Michael Hecht Hecht, author of Doubt: A Hisory, was a skeptic of revealed truth a couple years before the four horsemen of the angry "new atheism" mounted their steeds. Listening to this interview reminded me to add her book to my 2011 reading list.
#25 Vaccines DO NOT cause Autism This one was 'cast on both feeds so I've heard this excellent interview before.
#14-Dr. Pamela Gay of Astronomy Cast Dr. Gay gives a surprisingly candid interview in which she and Dr. Campbell discuss the challenges of being women in the male-dominated fields of science and medicine.
#12 Does Free Will Exist? So, what does it mean to us if there is no "contra-causal" free will?
#5 How are Science and Philosophy Related?
Dr. Campbell is so genuine and committed it's easy to overlook the few glitches in some episodes as she negotiated her podcasting learning curve. I recommend you give Brain Science and Books and Ideas a listen.