text: The green hosue gas emission in the United States is up to fifty percent. Driving cars everywhere is ruining our enviroment. We need this earth to last as long as we can and polluting it is not going to help us. Riding your bike places is an efficent way of transportation it may not be the fastest but it will get you where you need to go without polluting our earth. Driving cars is not only polluting our earth but it is also killing people, irresponsable drivers that drive under the infuence have killed dozens of people. Riding a bike is much more safe.