I say let the nature run its course. Food chain... anyone heard of that?

One day the green veggies will be wiped out, replaced by fuel-crops, useful for cars and pigs and cattle. So the choice will be between bovines or swines for breakfast, lunch and dinner.

Wait a second. Maybe our intelligent kind will have devised a way to make a four course dinner out of disposed microprocessors, cables and plastic.. by then. Or we might as well have wrestled each other to death, gladiator style.

_x