[droro]

Science Talk has been a longtime staple of mine: http://rss.sciam.com/sciam/science-talk

I know you asked for conversations/talk and John Green's The Anthropocene Reviewed is a monologue, but wow is it a well-told and researched monologue. https://www.wnycstudios.org/podcasts/anthropocene-reviewed

I recommend it for anyone who wants to think more deeply about all things, including those which we previously might have considered unworthy of our mind cycles, such as the Taco Bell breakfast menu.