Noise: A Human History is a cool 30-part radio series by David Hendy in collaboration with the British Library Sound Archive and the BBC that explores the past 100,000 years of sound and listening.
The comedy troupe Duck's Breath Mystery Theatre started in 1975 when five University of Iowa graduate students hoped to score some free beer. You may have heard Ask Dr. Science (Wikipedia) sketches on All Things Considered. Ask Dr. Science first ran in 1982 (or maybe on New Year's Day 1981) as a project of Duck's Breath members Dan Coffey and Merle Kessler on KQED. [more inside]
"For about six months now, Sound of Young America editor Nick White and I (Jesse Thorn) have been working on a secret project. Now, the secret can be revealed... please welcome WTF with Marc Maron, the public radio series!" [more inside]
The Wire This award winning CBC radio series incorporates interviews, music and sound to explore the impact of electricity on music, from Edison to Caruso to Les Paul to Bjork. Exhaustively researched and beautifully produced, it's somewhere between a documentary, a remix and a music show. The home site has excerpts, playlists, and the remix from each show, but you can listen to all eight episodes in their entirely at PRX (you'll need to login first).