You can save the earth by saving gas! You can take public transportation, walk, bike, and carpool. Taking public transportation like a bus or train is good, because millions of people can fit on a bus or train that saves tons of gas. Walking saves the earth because you don’t need ANY gas. Using a bike saves gas you also don’t need any gas. You use your feet to pedal. Carpooling saves gas because you share a car with two or more people. Those are some ways we can save gas and the earth!