The biggest single step that the United States can take to curb global warming and save oil is to require automakers to produce cleaner, more fuel-efficient vehicles. Each gallon of gasoline we burn emits between 24 and 28 pounds of carbon dioxide, the most common greenhouse gas, into the atmosphere.

By using existing technology to produce vehicles that go farther on a gallon of gas and emit less carbon dioxide pollution, Americans can save billions of dollars, curb global warming pollution, and slash our dependence on oil.

Adapted from www.sierraclub.org