Arsenic is a dangerous "master of disguise" that can trick the body into thinking it's phosphorous, bind to sulphur, and break down cell mechanisms in our body. But even though it's best known as a poison, arsenic and arsenic compounds have also been used in medicine, to build amplifiers in cell phones, as a semiconductor in space, and other industrial uses. This Element of Surprise segment features the following experts: Dr. Juris Meija, research officer, National Research Council Canada, and Chuck MacDonald, Dean of Science, Carleton University.

From the Curio.ca streaming audio-visual collection.