We use cars to get to work, run errands, and visit friends. Most of these cars run on gas, but the oil we use to make gas is running out. What’s more, drilling for oil destroys natural areas, and burning gas creates pollution. Other ways to power cars, such as electricity, ethanol, and biodiesel, already exist. So why isn't everyone using these energy sources?
To answer this and other important environmental questions, you’ll need to draw on the ideas of many fields, such as science, economics, and politics. If you major in environmental studies, you’ll learn how.