• Metals in your smartphone have no substitutes http://theconversation.com/metals-in-your-smartphone-have-no-substitutes-21142 6 comments 6/12/2013

• Yale University study sounds alarm on rare earth metal shortages, finding that of the 62 elements used in smartphones and similar devices, none had an equal-performance substitute, and twelve had no conceivable replacement http://www.bbc.co.uk/news/technology-25260174 82 comments 8/12/2013 worldnews
• Yale University study sounds alarm on rare earth metal shortages, finding that of the 62 elements used in smartphones and similar devices, none had an equal-performance substitute, and twelve had no conceivable replacement http://www.bbc.co.uk/news/technology-25260174 113 comments 6/12/2013 technology