Anthropogenic global warming theory Video
IPCC report: global warming theory is 'junk science' anthropogenic global warming theory.With: Anthropogenic global warming theory
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The global warming controversy concerns the public debate over whether global warming is occurring, how much has occurred in modern times, what has caused it, what its effects will be, whether any action can or should be taken to curb it, and if so what that action should be.
In the scientific literaturethere is a strong consensus that global surface temperatures have increased in recent decades and that the trend is caused by human-induced emissions of greenhouse gases. The controversy is, by now, political rather than scientific: there is a scientific consensus that global warming is happening and is caused by human activity. Political and popular debate concerning the existence and cause of global warming includes the reasons for the increase seen in the instrumental temperature recordwhether anthropogenic global warming theory warming trend exceeds normal climatic variations, and whether human activities have contributed significantly to it.
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Scientists have resolved these questions decisively in favour of the view that the current warming trend exists and is ongoing, that human activity is the cause, and that it is without precedent in at least years. Global warming remains an issue of widespread political debate, often split along party political lines, especially in the United States. The sources of funding for those involved with climate science opposing mainstream scientific positions have been questioned. There are debates about the best policy responses to the sciencetheir cost-effectiveness anthropogenci their urgency.
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Climate scientists, especially in the United States, have reported government and oil-industry pressure to censor or suppress their work and hide scientific data, with directives not to discuss the subject in public communications. Legal cases regarding global anthropogenic global warming theory, its effects, and measures to reduce it have reached American courts. The fossil fuels lobby has been identified as overtly or covertly supporting efforts to undermine or discredit the scientific consensus on global warming. In the United Statesthe mass media devoted little coverage to global warming until the drought ofand James E.
Hansen 's testimony to the Senatewhich explicitly attributed "the abnormally hot weather plaguing our nation" to global warming.
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Global warming in the U. The British press also changed its coverage at the end offollowing a speech by Margaret Thatcher to the Royal Society advocating anthropogenic global warming theory against human-induced climate change. At the same time environmental organizations and the political opposition were demanding "solutions that contrasted with the government's". If a doctor sees a child with a fever, he can't wait for [endless] tests. He has to act on what is there. Many Article source countries took action to reduce greenhouse gas emissions before West Germany started to take action after the Green Party took seats in Parliament in the s.
All countries of the European Union ratified the Kyoto Protocol.
Substantial activity by NGOs took place as well. The theory that increases in greenhouse gases would lead to an increase in temperature was first proposed by the Swedish chemist Svante Here inbut climate change did not arise as a political issue until the s.
It took many years for this particular issue to attract any type of attention. In Europe, the notion of human influence on climate gained wide anthropogenic global warming theory more rapidly than in the United States and other countries. Inthe BBC announced the anthropogenic global warming theory of a planned television special Planet Reliefwhich would have highlighted the global warming issue and included a mass electrical switch-off. I think there are a lot of people who think that, but it must be stopped. The authors of the book Merchants of Doubtprovide documentation for the assertion that professional deniers have tried to sow seeds of doubt in public opinion in order to halt any meaningful social or political progress to reduce the impact of human carbon emissions.
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The fact that only half of the American population believes global warming is caused by human activity could be seen as a victory for these deniers. A compendium of poll results on public perceptions about global warming is below. Globsl Canadian science anthropogenic global warming theory and environmental activist David Suzuki reports that focus groups organized by the David Suzuki Foundation in showed that the public has a poor understanding of the science behind global warming.
An example of the poor understanding is public confusion between global warming and ozone depletion or other environmental problems. But there is no evidence of alarm over global warming in either the United States or China —the two largest producers of greenhouse gases.]
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