TED Discussion 5: “The Toxic Baby” Click below to view the TED talk: Tyrone Hayes & Penelope Dagessar-Chaffer: “The Toxic Baby” Tyrone Hayes and Penelope Dagessar-Chaffer present a unique concept of “internal environmentalism”; that is, the internal mechanisms of the body are affected by outside (induced) chemicals. In your initial post, suggest what might further result from the atrazine/letrozole application, the BPA hormone disrupter in baby bottles and the movement of toxic chemicals across the placenta like absorbance of chemicals through the frog’s skin.