Kate Yandell discovers that parrots are hanging out in the city. Jon Chang taps into a psychological and musical connection. Rose Eveleth and Colm Kelleher banter and bicker about the Tasmanian Devil.
Laura Geggel jumps into the world of black rot, frosty pod and witch's broom, three fungi attacking cacao pods across the world. A chocolate taster and researcher tell The Doppler Effect how they're fighting back.