The biggest tab the public picks up for fossil fuels has to do with what economists call 'external costs,' like the health effects of air and water pollution.

By burning fossil fuels, we are already dumping 30 billion tons of CO2 into the atmosphere every year, which has a profound effect on the climate. So, like it or not, we're already messing with a system we don't understand.

Despite all the progress climate scientists have made in understanding the risks we run by loading the atmosphere with CO2, the world is still as addicted to fossil fuels as ever.

Practically every environmental problem we have can be traced to our addiction to fossil fuels, primarily oil.

We must get rid of fossil fuels by developing injection systems for automobiles, which can run on bio-fuel.

It's as certain that as long as fossil fuels are the cheapest energy, we will just keep burning them.