text: It is also important to know the basic of emotions, because that how you express yourself.        Do you ever wonder why the world is becoming so much warmer by the minute? Not many people stop and realize what's the real problem. Us humans are the major problem in this situation, we don't see that we are taking what we have to an advantage. To our factories, cars, or even trash. The main one that is causing our greenhouse gases to rise is our Power plants, but following behind the power plants are vehicles. Cars have become a major impact in our lives, from hurting one another, to hurting the place we live on. Car-free cities are going to help make a big, helpful change in peoples lives.