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<br>In just the last fifty years, humans, namely Americans have virtually remodeled the Earth and everything on it. We have changed its landscapes, wind patterns, migration routes, and weather; diminished its greenery and killed its animals. Nature did not seem a force that could be controlled and yet it has been. We are conducting an inadvertent global experiment by changing the face of the entire planet. We are destroying the ozone layer, which allows life to exist on the Earth's surface, clearing the majority of the earth's forests, and disrupting countless ecosystems. The result has been an unfavorable alteration of the composition of the biosphere and the Earth's heat balance. If we do not slow down our use of fossil fuels and stop destroying the forests, the world will become hotter than it has been in the past million years. This warming will rearrange entire biological communities and cause many species to become extinct.
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<br>The desperate plight of the environment should by all means be the first priority for every single government and person on this planet. With today's common knowledge of what might happen in the near future if significant changes aren't made in the lifestyle of most people it's hard to understand why 70 million cars continue to vomit their poison into the air everyday.