We are doing this petition because we are very worried about how pollutes the heating. You know that in one day at school, the heating consumes more than 1000 liters of water. That is bad for everyone and if we continue like this, in a few years, there will be no water in the world. We can turn off radiators in empty rooms and not leave the heating on during all classes. That's why we invite you to sign this petition, so the school can do something to avoid this contamination.