The last couple of years the amount of carbon dioxide has increased a lot and so has the temperature. In the past 20 years, the world's temperature has risen about two-thirds. Most carbon dioxide that goes into the air is caused by factories, plaines, cars, trains and more. But what most people don’t know is that the most amount of carbon dioxide is caused by natural factors. These natural factors are mostly oil, coal and gas that is released into the atmosphere. Gas releases greenhouse gases into the air. These greenhouse gases cause carbon dioxide and methane to go into the air. The extra amount of carbon dioxide and methane that goes into the air cause a higher temperature.

The students of this group live in three different cities. These three cities are: Rotterdam (The Netherlands), Buzet (Croatia) and Nysa (Poland). In these cities, the students go to school. 

Nysa has 44,419 inhabitants (population). It is the second biggest city from these three cities. The most important climatic factor in Nysa is the location. Nysa is located in the valley. Nysa has a few factories. Most residents move by car or public transport. Sometimes smog occurs in Nysa. There is a lake. This lake is 20 km². In Nysa there are a few parks and squares. Trees and plants clean the air. Nysa has a slight pollution problem because of these factors. 

The measurements were made in front of the school in Rotterdam. In the morning at 8:30 the measurements were made. So the temperature and the amount of CO2 was measured at the same time. The Dutch students did the measurements in the month of January. 

The measurements were both made outside of the house of the students. Both in and outside of the city centre. These measurements were made at 7 am. The Polish students did the measurements in the month of December. 

The measurements for the temperature were taken in Buzet. The data for pollution was taken from an internet website because students don’t have any equipment for measuring it. It was measured in January and February at 11 am.  

Climate change affects our society by affecting a range of different social, cultural and natural resources. After completing our international project, we came to the conclusion that climate change is adversely affecting the environment, the economy and society. We observed in all cities (Nysa, Rotterdam and Buzet) a higher temperature in the city center than on the outskirts of the city. This is due to the urban heat island. The largest pollution was observed in the Netherlands and the smallest in Croatia. But this may be due to measurement errors, because we took measurements at other times.
And how do climate change affect the environment?
- the temperature is constantly rising - the last few years have not been as cold as winters. This is a global problem, not only in Rotterdam, Nysa or Buzet. It's about global warming and what is happening around the world that is causing this problem. Such as too many plastic products, tree felling and too much production of goods that must be transported or exported worldwide.
- Extreme weather phenomena and change in the structure of precipitation
Heavy rainfall and other extreme weather phenomena are becoming more common. This can lead to floods, deterioration of water quality or reduction of water resources in some regions.

We don't know how to end the problem of polluted environment, but we know that we PEOPLE must start doing something about it in order to continue living happily on Earth!

The teamwork didn’t go as well as we thought. It is hard to communicate with each other when you live in different countries, have different schools and different lives. As already mentioned, communication was weak. This had an effect on time because it wasted most of our time waiting for a reply when actually it was best if we started with the project when waiting. If this happens again we can reflect on this and use the time wisely. With a little more effort and communication this project could have gone more easily. On the other hand, it was pretty fun to do, learning about different cities and getting to know others from different countries. Learning to communicate with others that have different experiences. So that is a positive side.