If there’s one bright spot in the whole worry about global warming, greenhouse gases and the impact of using oil for everything from powering cars and machinery to making agricultural fertilizers and plastic, it’s this: Chances are high that the world will run out of oil before we can do irreparable damage. And at the point when there’s no more oil, we’re going to have to hope that we haven’t done so much damage to this planet that we’ll find it impossible to sustain ourselves.
