The globe is rocked by extreme weather conditions and the hottest temperatures on record. As the global average temperature increases, floods, droughts, unusually cold winters, wildfires and huge storms occur. Are all these horrors caused by human-induced global warming? The source of global warming is a very controversial subject. Some scientists believe that global warming is a natural part of the Earth's cycle, because Earth has always experienced natural heating and cooling cycles. Other scientists believe that global warming is caused by humans because of the greenhouse effect. The greenhouse effect is the accumulation of greenhouse gases such as carbon dioxide emitted by the burning of fossil fuels. These scientists believe that humans are the source and solution of the problem. Global warming, whatever the source, has many harmful effects on the planet, such as its effects on aquatic animals and the melting of ice caps. Scientists believe that by reducing our carbon emissions through political action and finding alternative energy sources, we can stop the damage from global warming. The world today is divided between two different views regarding global warming. Although most people claim that recent human activities and the use of fossil fuels are causing global warming, a few scientists also claim the opposite. According to these scientists, global warming is not caused by humans and is simply another natural cycle that the Earth has been going through since the beginning. What's more, it works opposite to what environmentalists say. Global warming will not be harmful and will in fact benefit humanity, as it did about 1000 years ago. Global warming has become a popular political topic...... middle of paper ......points®. Detroit: Greenhaven Press, 2006. Opposing Viewpoints Resource Center. Gale of wind. Michigan State University Libraries. October 28, 2014. http://find.galegroup.com/ovrc/infomark.do?&contentSet=GSRC&type=retrieve&tabID=T010&prodId=OVRC&docId=EJ3010222254&source=gale&userGroupName=msu_main&version=1.0 "SIGNS OF WARMING." Science World March 6, 2011: 18 -21. Education module. ProQuest. MSU Library, East Lansing, Michigan. October 22, 2014. http://www.proquest.com.proxy2.cl.msu.edu:2047/William D Nordhaus. "'The Global Warming Question': An Exchange." The New York Review of Books September 25, 2014: 92. Research Library Core. ProQuest. MSU Library, East Lansing, Michigan. October 22, 2014. Williams, Nicole. "Al Gore's Personal Energy Use Is His Own 'Inconvenient Truth'" Tennessee Center for Policy Research. February 26 2007