An 'ARE YOU SMARTER THAN AL GORE?' energy quiz

7. Which nation is the top foreign supplier of oil to the US?

a) Canada

b) Saudi Arabia

c) Venezuela

Previous answer:

6. Turning off your car engine and restarting it uses as much gas as about the equivalent of

a) 10 seconds of idling

"Idling gets zero miles per gallon," says the California Energy Commission. "Idling for 1 hour burns nearly 1 gallon of gasoline."

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