"Framework" is a show about field recordings, acoustic ecology, and other found sounds. This week: "This is the second of a three-part series produced by Ernst Karel in the United States, in collaboration with the students of the Sonic Ethnography course he teaches at Harvard University in Cambridge, Massachusetts. For more information see his website at http://ek.klingt.org, or the Sensory Ethnography Lab website at http://sel.fas.harvard.edu."