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Global warming -- the gradual increase in planet-wide temperatures -- seems to be accepted by many scientists and people now as fact. Generally, this warming is attributed to the increase of green-house gases in the Earth's upper atmosphere.

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Introduction

Global warming -- the gradual increase in planet-wide temperatures -- seems to be accepted by many scientists and people now as fact. Generally, this warming is attributed to the increase of green-house gases in the Earth's upper atmosphere. However, some solar scientists are considering whether the warming exists at all. And, if it does, might it be caused, wholely or in part, by a periodic but small increase in the Sun's energy output. An increase of just 0.2% in the solar output could have the same affect as doubling the carbon dioxide in the Earth's atmosphere. What is the Problem? What is the evidence for global warming? Certainly, there are considerably more green-house gases (e.g. carbon dioxide) in our atmosphere than in previous times. And there appears to be some evidence that global temperatures are rising. But, how accurate and correct are our global warming statistics? And, do we really know what role, if any, the Sun might play in any global warming patterns? These issues are currently being debated, and may significantly affect you for the rest of your life. Would you like to do some research to find out more about global warming? We suggest here some research topics and places to begin looking for information. ...read more.

Middle

Experts say that deterioration in public health practices such as rapid urbanization without adequate infrastructure, forced large scale resettlement of people, increased drug resistance, higher mobility through air travel, and lack of insect-control programs have the greatest impact on the spread of vector-borne diseases. �Larger quantities of CO2 in the atmosphere and warmer climates would likely lead to an increase in vegetation. During warm periods in history vegetation flourished, at one point allowing the Vikings to farm in now frozen Greenland. Politics What are the policy proposals? �The U.S. agreed to a 7% reduction of CO2 emissions from what they were in 1990 -- a target to be met by 2008-2012. This agreement would result in massive restrictions on energy use and large taxpayer-funded subsidies for new technologies. �The Clinton Administration has supported a system of tradable permits to be used by companies that emit CO2. These permits could be bought and sold inter-nationally, giving companies an incentive to lower emissions and thus sell their permits. But this system would require massive international oversight on the order of a worldwide EPA to track CO2 emissions, and the costs to consumers would still be high. ...read more.

Conclusion

Claim: 2,500 United Nations-sponsored scientists have concluded that human greenhouse gas emissions are warming the temperature of the planet. Fact: This claim is based on the fact that the United Nations Intergovernment Panel on Climate Change (IPCC) issued a report suggesting a "discernible human influence" on climate change. While several thousand scientists were consulted in crafting the report, not all of them agreed with its conclusions. As Dr. John W. Zillman, one of these scientists noted: "[The IPCC was] meticulous in insisting that the final decision on whether to accept particular review comments should reside with chapter Lead Authors... Some Lead Authors ignored valid critical comments or failed to... reflect dissenting views..." The report was therefore the result of a political rather than a scientific process. Claim: The majority of scientists believe global warming is a process underway and that it is human-induced. Fact: A 1992 Gallup survey of climatologists found that 81 percent of respondents believed that the global temperature had not risen over the past 100 years, were uncertain whether or not or why such warming had occurred, or believed any temperature increases during that period were within the natural range of variation. Further, a 1997 survey conducted by American Viewpoint found that state climatologists believe that global warming is largely a natural phenomenon by a margin of 44% to 17%. ...read more.

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