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

Coal is responsible for as much atmospheric carbon dioxide as other fossil fuels combined and it still has far greater reserves. We must stop using it.

As long as we're dependent on those fossil fuels, we're dependent on the Middle East. If we are not victims, we're certainly captives.

It's going to cost trillions of dollars to rework the energy sources all over the world. Were going to have to move away from fossil fuels.

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.