Saturdays are your day for running errands. On a typical Saturday, you first drive to the grocery store to buy food. Then you drive home, unpack your groceries, and get back in your car to run the rest of your errands. If other people are with you, you often leave the car running in the parking lot so that the people can listen to the radio as you run the errand. Explain how your behavior is related to global warming, and describe two ways that you could change your behavior to conserve energy or be more energy efficient.