A good way to clean the air is to burn less gasoline.

A tax would make people figure out on their own how to burn less gasoline.

But if hybrid cars burn gasoline, aren't they still causing pollution?

With smaller cars increasingly popular, California now burns less gasoline per capita than all but six states.

If you burn gasoline in a car engine, only about 20 percent of it powers the wheels.

If your goal is to get Americans to burn less gasoline, then we've already hit on the best strategy.

We will burn less gasoline, and our trade balance will improve.

Light trucks are permitted to burn 33 percent more gasoline, on average, than passenger cars.

"We have 180 million vehicles on the road that burn gasoline," he said.

It is also hard to get energy out of the chemicals that are produced when we burn gasoline.