BusinessWeek today reports the findings of a new study by PwC predicting chronic shortages of 14 metals and minerals critical to major industrial sectors ranging from chemicals and  aviation to renewable energy sources like wind and solar power.  Lithium, American Resources’ metal of the month, makes the list.  The report, based on a survey of 69 senior executives from major manufacturing companies, concludes that many businesses have come to recognize that “we are living beyond the planet’s means.” Before we reach that apocalyptic conclusion, let’s do what we can to develop the resources that remain available to us. We may find that new sources of supply can turn shortfall to surplus — fueling innovation and economic growth.