Simple Ways to Save The World and be a Hero

Well im not from greenpeace and institutions that are fighting with the global warming, im just a ant that live in this world and i want to make you know some methods to be a hero. If you do this simple things you will be a real superman or… batman:

1. Everyone have a cellphone right ? well i know that you have the battery charger always conected, if you disconect the battery charger and just conect it when the cellphone is running out of battery you have some requirements to be a hero.
2. Turn off the light, you dont need the strength of superman to press a button, when leaving your room just press the button to save some energy, if you are going to the bathroom just 10 seconds, do it.
3. In you computer try a have a black wallpaper or just try not to have a white one, white ones spent the double energy than a black one.