The climate change is one of the biggest problem of the world and logically of us. We can see the impacts of it, for example: over Australia is a big hole, there is not so much atmosfere, so the UV is accordingly hight. We´re responsible because of our live stalk! For example some of us go to school with a car, although the distance from their home to school is very short. Or some flights are from Vienna to Klagenfurt. This route is so short, you can travel by the train! So when you`re traveling please do it by train, and take the plain only for long and really necessary destinies.