The blogger known as "Freelance Kiruv Maniac" and I seem recently to have concluded a lengthy discussion about the scientific knowledge of Chazal; the reliability of scientific assertions contained in the Talmud in both halachic and aggadic contexts; and, in that regard, the appropriateness of banning the invocation of Rabbeinu Avraham ben Harambam's opinion (i.e., that Chazal made occasional scientific errors), as seems to have been the intention of Rabbi Y.S. Elyashiv and others in their banning of some of the books of Rabbi Natan Slifkin. The discussion took place in the comments on three posts on Freelance Kiruv Maniac's blog, as well as in the main body of the latter 2 posts. The posts are, in order:
Someone with an interest in the topic and a lot of time on his hands may find the discussion interesting.