Global Warming And Climate Change The Causes - amazonia.fiocruz.br

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 Globa, warming includes the reasons for the increase seen in the instrumental temperature recordwhether the 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. Chanye 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 and their urgency. 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.

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Legal cases regarding global warming, 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. The British press also changed its coverage at the end offollowing a speech by Margaret Thatcher to the Royal Society advocating action against human-induced climate change. At the same time environmental organizations and the political opposition were demanding "solutions that contrasted with the government's".

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If a doctor sees a child with a fever, he Climafe wait for [endless] tests. He has to act on what is there. Source European 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.]