There are many things we can change to make this world a better place. We can ride our bikes to work or walk to school. The main problem with our world is the pollution. The pollution we produce can cause us to lose our wildlife. All the air pollution we produce everyday will cause global warming. That's when the planet heats up so the polar bears homes will melt and become water. Green house pollution is when there is to much pollution because of over population and all the pollution that is supposed to go into space gets trapped inside the earths surface. That is a problem because then all the pollution is stuck inside which makes the air dangerous to breath in. When Co2 is released into the air it's like adding another blanket to the bed. As you can tell there are a lot of things we need to change so we better start changing them now.