Some people believe that global warming and the greenhouse effect is real and humans cause part of it. They believe this for many reasons. Carbon dioxide and other greenhouse gases, which are made by humans, have been rising, causing the earth's temperature to rise. Scientists say that there is a less then a two-percent possibility that the melting of polar ice is caused by natural climate (Woodard). Changes in cities also affect local climates, which are caused by population growth (Eblen). Also, the earth is warmer then any time in history. The four warmest years have all been in the 1980s (Polesetsky 58).
Others believe that global warming is exaggerated. Some believe that the press just over does it. …
