Our cities are rapidly growing with inhabitants and the space they occupy. About every minute, we add 10,000 meters of this city space. This development requires us to think about how we should change the way our cities are engineered. Cities are a main contributor to climate change. Today, cities take 3% of the earth's land, but take two-thirds of the world's energy demand and account for over 70% of global CO2 emissions. Most of this comes from industrial and motorized transportation that uses huge quantities of fossil fuels and infrastructure constructed with carbon materials. Almost half of the world's population lives in cities, which will likely increase by two-thirds by 2030. So how can we contribute to creating a sustainable city?
We can first start by lowering transportation emissions. Transportation emissions account for roughly 28% of greenhouse gas emissions. These forms of transportation primarily come from our cars, trucks, ships, planes, and more. Some strategies for transportation can be fuel economy and fuel efficiency. Fuel economy is how far a car can go using a set amount of fuel and is measured in miles per gallon (MPG). Fuel efficiency refers to how efficiently a vehicle uses fuel and can be improved through driver technique and maintenance. We can save fuel by using carpooling, riding transit, biking, or walking to a place. These are some ways that we can reduce emissions from transportation. Next is electricity production, which takes up 25% of gas emissions. Electric power generates the second largest share of greenhouse gas emissions. 79% of our electricity comes from burning fossil fuels, coal, and natural gas. As individuals, we can do simple things such as turning off any electric devices completely such as, computers, televisions, video games, and other electronics when not using them. If you have an air conditioner, you can limit the use of it. These are some ways that we can help control our carbon footprints and help to overall maintain a sustainable city.

Works Cited:
epa.gov.
-Fossil Fuels-https://www.epa.gov/nutrientpollution/sources-and-solutions-fossil-fuels
-https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emissions#transportation

des.nh.gov-
-https://www.des.nh.gov/climate-and-sustainability/transportation/emission-reduction-strategies#:~:text=Conserve%20fuel%20and%20protect%20the,to%20reduce%20emissions%20from%20transportation.

blogs.worldbank.org-
-https://blogs.worldbank.org/sustainablecities/cutting-global-carbon-emissions-where-do-cities-stand#:~:text=Cities%20account%20for%20over%2070,constructed%20with%20carbon%2Dintensive%20materials.