When an animal makes a sound, does that sound have meaning? Mike talks to Dr. Joe Hanson, a biology expert and curator/host of It's Okay To Be Smart, and you’ll get a glimpse into the world of animals, sound, and semiotics.-- SOURCES --The semiome: From genetic to semiotic scaffoldinghttp://philpapers.org/rec/HOFTSF-- Find Joe at --http://youtube.com/itsokaytobesmarttwitter.com/jtotheizzoetwitter.com/okaytobesmart