Chromium is used in stainless steel, is corrosion-resistant and shiny. It produces the intense red of rubies and the signature green of emeralds. Broccoli is a good source of chromium 3, which, among other functions, provides support for healthy glucose metabolism. But another form of the element, chromium 6, is carcinogenic. This Element of Surprise segment features the following experts: Alastair Kierulf, PhD candidate, Chemistry, Queen's University, and Darren Richeson, Professor, Chemistry and Biomolecular Sciences, University of Ottawa.

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