I think that cars are the biggest factor in omitting large carbon amounts into the air. To greatly reduce this, a community can rely more on public transportation, using bikes, and overall just walk more. Public transportation decreases carbon amounts because instead of multiple riding on their own cars, one car/vehicle is used. This is not always practical, so another option could just be using greener car hybrids that run on electricity, or have a high mpg. Another way to create a greener city is to put more effort and priority toward cleaner energy. Some examples of cleaner energy are wind turbines and hydro-electric power. These are great sources of energy because wind and water are renewable resources. With clean energy sources and limitede carbon emissions from cars, the average citizens' carbon footprints can be greatly reduced.

I agree with your idea of using public transportation more, but this depends on the persons living location. Personally, living in Maine, there is little to zero public transportation (trains, buses, subway, etc.) in my area that can be used to get to places such as school. However, if living in an urban or populated area, a person should try to use public transportation as much as possible. Meanwhile, for people that are living in rural areas like Maine, carpooling is a great option. Personally, driving around a 30 miles round trip to school every day had increased my carbon footprint by a pretty substantial amount. Carpooling will eliminate the amount of CO2 being released and like you said, greener, electric cars will also be a smart choice. Electric cars reduce the amount of greenhouse gases released, as well as fossil fuels and pollutants.

Or perhaps another form of transportation entirely. such as bikes, skateboards, or if you don't know how to bike a tricycle variant or a quadricycle. this would cause no greenhouse gasses and perhaps even allow for more lanes in streets making it more accessible and less traffic. the only problem would be long distance travels. perhaps for distances like a road trip from where i live, oakland, to Disneyland could be utilized by solar or wind powered trains.

I completely agree that using public transportation is a great way to reduce a person's carbon footprint, but when you live in a rural place like I do you have to get more creative about ways to reduce your CO2 emissions. Where I live we have very few forms of public transportation. The majority of people drive to their destination, or walk if they live close enough. I personally am very lucky to live in a place that is relatively close to most of the amenities that I might need to access so I am usually able to walk or bike to these places, but I have a number of friends that are unable to do this because they live too far away. Instead these people have to drive, which as many people know is very poor for the environment, and releases a lot of carbon dioxide into the atmosphere. Some solutions to this problem that my family, and many others in my area have tried to take part in, are cars with higher gas mileage, carpooling, and walking or biking when ever you can. Investing in a car that has 40mpg or higher is a great way to help the environment, and is one way my fami ly tries to reduce our transportation carbon footprint. Carpooling is also great way to reduce this. If you have to go somewhere relatively far away carpooling is great to be a little greener.

That is an interesting solution to the problem of carbon emotions, but as eleanorgreer stared, it is hard for people who leave in small towns with little population because there isn't a lot of public transportation. I do, however, agree with what the idea of walking places. In small towns, and even cities it is just as easy to walk to a place in which you are trying to get as if you were trying to drive. I don understand that people want their own private car to drive around, but that would certainly help the economy.