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Environmental Science

Fossil Fuels

Quick fact

Burning one gallon of gasoline releases about 19.6 pounds of carbon dioxide—the same as the weight of a small dog—into the atmosphere.

Why this is interesting

Every time you flip a light switch or fill your car’s tank, you are using energy that was, in a sense, bottled millions of years ago. But what exactly is inside that bottle, and why does using it come with such a heavy price?