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Global Warming Speech

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Introduction

´╗┐Welcome to SciCast. Your leading science informant. Today we will talk about global warming. There are many opinions about global warming and we?ll be discussing them with some famous professors. First of all, let?s just have an overview of global warming. Global warming is defined as A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants. Global warming is said to be caused by many reasons ? some say due to human activities, some say due to the Earth and some people even disagree with the fact that global warming exists. According to the United States House of Representatives, they had a vote in April 2011, and they said ?The House rejected a Democratic ...read more.

Middle

Tapio Schneider on the other hand disagrees with what the house said. He stands by his opinion that Global Warming does exist and it?s because of the greenhouse gases. He is a climate scientist and Professor of Environmental Science and Engineering at the California Institute of Technology. Dr. Schneider, Yes, thank you for inviting me to SciCast today. It?s my pleasure to express my opinion on global warming. To me after years of carrying out research, it is clear that increases in greenhouse gas concentrations, in the global mean, will lead to warming. Although climate models differ in the amount of warming they project, in its spatial distribution, and in other more detailed aspects of the climate response, all climate models that can reproduce observed characteristics such as the seasonal cycle project warming ...read more.

Conclusion

Land areas are projected to warm faster than ocean areas. The risk of summer droughts in mid-continental regions is likely to increase. Sea level is projected to rise, both by thermal expansion of the warming oceans and by melting of land ice. Like Dr. Schneider, there are many other people who agree with the fact that global warming exists- and they say that it?s because of the greenhouse gases that humans release. Satellite imaging carried out by NASA and the National Snow and Ice Data Center shows that 40 percent of our multiyear ice has rescinded between 2005 and 2007. According to the Woods Hole Oceanographic Institution,, there is no room to argue that an environment that has been cold for nearly 10,000 years is going through a heat stroke. The planet?s various ecosystems operate naturally together like the many systems in a body would. ...read more.

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