World is a huge space. I think now out planet is suffering from our own hands: we crash it down every year. You know about Global Warming? Its the result of humans' actions. We bulit alot of factories every year, and stuff like that.Firstly, we should solve world's problems like GW... we should stop using so much electricity, its not that hard to do. Just turn off the light when you don't need it. You can be sure, if 20 people do like that its gonna be much better for our planet. Every person has a chance to make our world "feel better". I think the commercial of plastic bags was an amazing variant!