Since I walked in the door as secretary of energy, I've been doing everything in our powers to do what we can to reduce these gas prices. ... So, of course we don't want the price of gasoline to go up; we want it to go down.

A cap and trade bill will likely increase the costs of electricity. . . . These costs will be passed on to the consumers. But the issue is, how does it actually...how do we interact in terms with the rest of the world? If other countries don't impose a cost on carbon, then we would be at a disadvantage. . . . We should look at considering duties that would offset that cost.

While we cannot accurately predict the course of climate change in the coming decades, the risks we run if we don't change our course are enormous. Prudent risk management does not equate uncertainty with inaction.

Science is really about describing the way the universe works in one aspect or another in all branches of science-how a life-form works, how this works, how that works. ... You have to have a natural curiosity for that.

If I were emperor of the world, I would put the pedal to the floor on energy efficiency and conservation for the next decade.

Suppose you had a small electrical fire and... a structural engineer [looked] at your home's wiring [and] reports that the wiring is "shot" and there is a 50% chance that your house would burn down in the next few years unless you replace all the wiring. The job will cost $20,000... so you get an independent assessment. The next engineer agrees with the first warning. You can either continue to shop for additional evaluations until you find the one engineer in 1,000 that is willing to give you the answer you want, "Your family is not in danger" or you can change the wiring.

As the saying goes, the Stone Age did not end because we ran out of stones; we transitioned to better solutions. The same opportunity lies before us with energy efficiency and clean energy.