SCIENCE! What is the Rarest Precious Metal?

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Behind the scenes with me at the University of Nottingham: http://www.youtube.com/watch?v=vsiPt3l6H3U

Investigation of the most precious material: http://www.curiousnotions.com/home/metals.asp

Abundance of the elements: http://en.wikipedia.org/wiki/Abundance_of_the_chemical_elements

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