text: Lastly, you can get more exercise. Riding a bike and walking is a great source of exercising. Everyone always talks about how obeseity is a big problem well this can decrease the amount of body weight you have and you wont put gases into the air. That's 2 problems solved in 1. There are so many things you can do to solve this issue and these are only a few. I see a lot of people riding bikes or walking to school. Teachers especially which shows you that they arent always asking teenagers or new drivers to do it. Don't be the reason the earth is getting worse. Be the reason its getting better.