Although you may think that public transit can give off more carbon due to things like trains and subways being much bigger than the average car, that is actually not the case. Especially with big family cars like S.U.V.s, the standards car companies have to meet is much lower than the criteria that average public transit has to follow. Public Transit is made to have their vehicles emit less and less carbon every year, something that most companies do not follow. According to newyorker.com, car companies are able to classify S.U.V.s as trucks, making it so the window of carbon they are allow to emit is much larger than the average car. To conclude, yes more public transit is a solution to help stop climate change of carbon emissions.

Why are sustainable cities important?
I think that sustainable cities have a great impact on enviroment.
In particular in the reduction of the emissions coming from factories and vehicles, and mostly about the emission caused by energy prodution from fossil fuels.

What do we mean with sustainable cities?
A sustainable city is a kind of city that focuses on reducing waste and emissions by using renewable energy and electric vehicles.

In conclusion i think that the future needs sustainable cities not only for our wellbeing but also for the future generations.

I would agree. Sustainable cities, along with the points you already mentioned, would raise awareness about climate change. Something I find particularly concerning is the variation in the CO2 levels. Just at my own school, CO2 concertation ranges between 450ppm and 850ppm, a different of almost 2 fold. When designing a city, I think it is important to ensure that a different area of the city doesn't suffer from one area "green" (eg. having factories all in one place, pollutes one area, but keep the rest clean)

I completely agree! Cities are one of the main contributors to carbon emissions (70%), and making them more sustainable would reduce CO2 substantively. In terms of transportation, I think that we could go even further than electric vehicles and have the main form of transportation be walking/biking. Since cities are pretty compact and everything is relatively close together, the majority of places could be accessed without even having to use a vehicle. Current cities can be pretty dangerous for bikers or pedestrians, so to encourage it in a sustainable city there could be certain streets or areas that don’t allow cars. I went to Portugal last Spring and there were barely any cars, many of the streets were just for walking, and you had to park your car outside of them and walk in. Not only would this be better for the environment, but getting more cardio would also improve people’s physical and mental health. (I do realize that walking would be an issue for people with disabilities, that would be a separate problem to figure out).
https://www.nrdc.org/issues/sustainable-cities#overview

To make the city more eco-sustainable, we should all use means of transport that do not pollute like bicycles as much as possible. These are excellent if you have short trips to make, but if the trips are longer it is better to avoid the car and take some public transport to reduce pollution.

I agree with this completely. I think that it would be amazing if more cities could incorporate opportunities for more eco-friendly transportation like biking and walking. In addition to eco-friendly transportation cities could even take it a step further and make buildings more sustainable to help conserve energy and water. Solar panels are a great addition to homes and buildings. My house has solar panels and 70% of our electricity/energy is generated from the sun. Not only is this eco-friendly, but it helps lower our electric bill each month. If more buildings used solar panels it would help the environment and be more cost efficient. Another thing that I think would be a great addition to buildings would be a water conservation system, complete with things like rain catching technologies (ex. rain basin). These technologies would be cost efficient and help to conserve water. The water caught by these technologies could be used for things like pluming. To sum it up, I think that eco-friendly transportation and also sustainable water and energy systems would help to lower a cities overall carbon footprint, and I think that more cities should start implementing these things to be more climate conscious.

I was shocked that my transportation (mainly air travel )took up more than HALF of my carbon footprint. I feel like the normalization of air travel undermines how harmful airplanes are to our atmosphere. According to the Environmental and Energy Study Institute, 70% of airplane exhaust is CO2, and after being emitted, 30% of that gas is naturally removed from the atmosphere over 30 years, 50% disappears within a few centuries, and 20% stays in the atmosphere for thousands of years. As air travel increases, I can't imagine how much unnecessary carbon would end up just because of planes. I think that we should stop normalizing unnecessary air travel and educate others about its detrimental impact on our atmosphere. Additionally, I think we should also stop normalizing the frequent use of private jets, and how we should stop turning a blind eye to celebrities like Taylor Swift's carbon footprint. The idea of using private jets to travel from place to place is unbelievable because how can you not start thinking about how much carbon you, a single person, contribute to damaging our atmosphere?

Cold Fusion, or low-energy nuclear reaction (LENR) is basically a hypothesized type of nuclear reaction that should occur at room temperature. There is currently no widely accepted theoretical model that would allow cold fusion to occur.

Theoretically, it should provide virtually LIMITLESS energy and minimal nuclear waste, and pretty much no environmental impact compared to, say, fossil fuels.

See, current nuclear power plants use nuclear fission (not fusion), which, as the name suggests, consists of splitting heavy atoms (such as uranium-235 or plutonium-239) into smaller fragments, which releases a large amount of energy. The problem is, along with energy, fission also produces additional neutrons and radioactive fission products.

These radioactive fission products are typically unstable isotopes of elements such as cesium strontium, iodine, and plutonium. These isotopes decay and emit radiation in the form of alpha, beta, and gamma particles. Some of these isotopes can remain for thousands to millions of years.

Cold fusion, on the other hand, is a nuclear reaction which is quite frankly the opposite of fission. It involves two like atomic nuclei (often involving hydrogen isotopes such as deuterium and tritium) merging together to form a heavier nucleus (helium nuclei), releasing a significant amount of energy in the process. he energy released is due to the conservation of mass into energy, described in Einstein’s famous equation, E=mc^2, because if you look at the mass of the reactants and compare it to the mass of the product, you’ll find that its not equal, which means some of the mass has been transferred into energy.

The reason this occurs is because the speed of light (c) is a very large number, even the smallest of mass could theoretically be converted into a large amount of energy. This process occurs at near room temperature. This low energy requirement reduces harmful nuclear byproducts. Hydrogen isotopes are also relatively lighter than nuclear fission reactants, and therefore should generate more stable elements.

If we can somehow harness this release of energy, it could be a potential source of clean and abundant form of energy, proving to be superior to the fossil fuel and nuclear fission energy we use today…

(if ya read all of that congrats u officially don't have the attention span of a 6 year old yayyy)

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This is true, I agree.

I completely agree because E=MC2 is one of the most famous equations developed by albert einstein and this is completly true. The speed of light squared is actualy about 9 times 10 to the 16 power m per second which just shows how much limitless energy we can get.

Use more public transportation so less individual pollution

I agree with your idea and I think it would help a lot to reduce the pollution, but in my opinion the vehicles in a lot of cities need to be "updated" to guarantee to all of us the possibility of being more eco friendly.

Sustainable cities are the notions of the future, cities that are delineated to manage the needs of environmental and lucrative impact for the world. Meaning, that these are urban cities that are managed by creating green areas, green neighborhoods, environmental infrastructure, and eco-friendly substitutes to our original ways. Usually, when sustainable cities are spoken about, we usually speak about public transportation, walkable and bikeable neighborhoods, solar panels and farms, green building and architecture, solving our food production processes, easily attainable public resources, the conservation of water, as well as waste management. However, have we ever gotten into the depth of these truly transformative ways to live?
Approximately 1,023 million metric tons of Carbon divide are produced just from U.S gasoline and diesel only. We are speaking about just one single country, one country, the United States. What about the other countries? Combined, this is enough to weaken and allow the carbon dioxide emissions to grow exponentially. 75% of carbon monoxide pollution is created by transportation. Sustainable cities have offered alternatives besides driving individual vehicles, such as metro systems, rail transport, and creating cycling or walkways. Metro systems are rapid transit trains that consist of several cars that are run on the multiple-unit system. Rail transit is one of the fastest forms of ground transportation, using locomotives powered by fuel or electricity. Investments in bike lanes and pedestrian pathways have been encouraged for a number of reasons. Among the most effective modifications that communities can implement to meet their sustainability, economic, and social objectives are walking and bicycling, active transportation, and the lowest carbon forms of transportation.
Green architecture promotes energy efficiency, reuse and security of building materials, the use of renewable energy sources, and their need to lower the negative environmental effects. For instance, buildings such as One Central Park in Sydney, Australia. Once Central Park has 35,000 green wall plants inside it. They prioritize saving and reuse wastewater for irrigation and waste. These smart designs ensure to create structures that benefit the environment and communities of the world. Tao Zhu Yin Yuan in Taiwan has an “Anti-Global Warming and Carbon-Absorbing Ecosystem” according to  Amazing Architecture.
We have time, we still do. So many years have passed and we state that we will do something but we usually don’t. If the world eventually burns out due to everything we have done, who will tell our story? We’re running out of time, we have a limit, so what can we still do? What can we do while we have more time? We may start fixing the globe by fixing the large cities where we reside and the ones that are often traversed by cars. Have we done enough yet? No, we haven't. We have to press forward. We are paving the path to reject waste and significant carbon emissions from the world we live in by creating sustainable cities.

No, the short and simple answer is no. Nothing we do is going to fix the Earth right away. The Earth is way too broken and harmed for simple and unnoticeable actions to be taken and for it to actually work at all. Cites contribute to a lot if not most of the pollution and climate change that causes harm to the earth. Sustainable cities can do a few things to help though, such as, using renewable resources, having lots of sidewalks, opting for a mass transportation system, and slowing down energy consumption.
Using renewable resources would really improve any area in the world, but definitely areas with mass amounts of people with energy surges like no other. Cities are notorious for using so much power and this would really improve the carbon footprint of cities if most cities could use renewable energy. While yes it can be very expensive to start and maintain, the benefits much outwardly outweigh the price.
Having lots of sidewalks, or bicycle trails give more opportunities for people to walk or bike places, rather than driving. While, this is not just a problem for cities, it also for people that live further out. If there are more places closer to where people are they wont need to drive, or better for the people who live farther out of town where it is not ideal to walk into town when need be they could opt for mass transportation, such as bus or carpooling. This also would help more if electric or fuel efficient vehicles were used.
Slowing down on energy consumption in cities could really help with their carbon footprints too. Not using as much energy could benefit by not having to make as much, whether that is by renewable resources or carbon resources. Just not using as much puts so much less carbon into the atmosphere, helping our carbon footprints decrease.

https://www.repsol.com/en/energy-and-th … dex.cshtml
https://www.thegef.org/what-we-do/topic … ble-cities

In a city like EcoCity, the focus would be on reducing carbon emissions and promoting a sustainable lifestyle. There would be a good public transportation system, like trains and electric buses, so people can move around easily without needing cars. Buildings would be energy-efficient and use renewable energy sources like solar power. There would be lots of green spaces and areas for recycling and composting. Living in EcoCity would mean having access to modern urban life while also caring for the environment.

Solar energy is a great way to bring down schools carbon footprint. By using solar energy we bring down carbon footprint by a lot. Granted, if we only use solar energy seven out of the 10 months when were at school it would still make a difference. For the other three months, we could use the same energy we use today in our school. According to Energy Sage, the benefits of putting solar panels in our environment is important because solar panels aren't just good for the environment, they can also provide serious savings. How much money you can save varies based on several factors including your location, current energy usage, the size of your solar panel system, and most importantly, the price you pay for electricity. For example, if you currently pay $150 a month for electricity, you’ll save about $65,000 over the next three decades. Most solar shoppers save between $20,000 and $96,000 on electricity over the lifetime of their solar panel system. In this article, we'll walk you through what you need to understand how going solar can save you money and how to figure out what your savings will be. There are a bunch of other ways that solar energy can help our school. Like how much they will reduce your carbon footprint. The significant financial returns are a compelling reason to invest in renewable energy, but money isn't the only thing solar panels save. When you install solar, you also reduce CO2 emissions by limiting your fossil fuel consumption. Thank you for reading and here is the site it used www.energysage.com.

In this city, imagine a network of pedestrian-friendly streets lined with bike lanes and green spaces, encouraging walking and cycling. Public transportation would be efficient, powered by renewable energy sources, and easily accessible to all residents. There would be an emphasis on mixed land use, with neighborhoods designed to reduce the need for long commutes. Renewable energy sources like solar panels and wind turbines would dot the landscape, providing clean power for homes and businesses. Waste management would prioritize recycling and composting, minimizing landfill waste. It sounds like a city designed for a sustainable future, and definitely a place I'd consider living in!

I agree, I would also consider to live in a sustainable city. People should rely on renewable energy sources like the examples you gave in your text. Our waste should be recycled, which can lessen landfill waste. Renewable energy sources should be accessible to all residents, like you said in your text. I hope that in the future, people could live in a greener city.

In my opinion,nature is our best friend and we need to protect it at all costs! A way to protect is planting more trees. Our city can be more sustainable and organized. The trees gathers the carbon dioxide, protecting us from its danger.

I believe that in order to be able to improve the cleanliness of my city, it is necessary to add as many trash cans as possible, each one for a certain category, either paper, or plastic, or cardboard, and that there are no more normal trash cans. In this way we make the work of garbage collectors easier.