When we talk about a shortage of "resources," most people immediately think "oil." But the only reason oil is the most famous of the dwindling resources is because we feel the spike in prices, since we have to go buy the stuff ourselves on a weekly basis.

But other resources that are key to keeping our society operating are running out just as fast, but much more quietly. Pretty soon, you may turn on CNN to hear about wars being fought over something ridiculous, like ...