The sooner we get started with alternative energy sources and recognize that fossil fuels makes us less secure as a nation, and more dangerous as a planet, the better off we'll be.

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.

Some solutions are relatively simple and would provide economic benefits: implementing measures to conserve energy, putting a price on carbon through taxes and cap-and-trade and shifting from fossil fuels to clean and renewable energy sources.

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

A healthy environment, a strong economy and energy independent America - that would be the purpose of my presidency, is break the strangle hold that people enjoy on fossil fuels who hate our guts.

Fire made us human, fossil fuels made us modern, but now we need a new fire that makes us safe, secure, healthy and durable.