Shortages: Metals in demand

BBC: There was an outcry in the UK last month when metal thieves stole a plaque dedicated to two children killed by an IRA bomb attack in Warrington. It was the latest in a pandemic of metals thefts: lead from church roofs, copper from railway cables. Does this mean we're reaching a shortage of these metals? No - it just means they have attained a value that makes a low-risk crime worthwhile. Will we suffer a shortage of metals as the world population grows and gets richer? That's a different......

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