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Indirect emissions from land use change, emissions of other greenhouse gases such as nitrous oxide, and increased concentrations of water vapor in the atmosphere, also contribute to climate change. [1] Observed temperature from NASA [3] vs the 1850–1900 average used by the IPCC as a pre-industrial baseline. [4]
Other United Nations bodies such as the United Nations Environment Programme are also top-quality sources on climate change. Unlike the IPCC, other UN bodies may make policy recommendations. They also tend to be easier to read and summarize. All key UN climate reports; The annual Emissions Gap report has well-organized information on mitigation
In 2004, the geologist and historian of science Naomi Oreskes analyzed the abstracts of 928 scientific papers on "global climate change" published between 1993 and 2003. 75% had either explicitly expressed support for the scientific consensus on anthropogenic climate change, or had accepted it as a given and were focused on evaluating its ...
Scientists agree that by far the biggest cause of the recent extreme warming is climate change from the burning of coal, oil and natural gas that has triggered a long upward trend in temperatures.
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A consensus, based on current evidence, now exists within the global scientific community that human activities are the main source of climate change and that the burning of fossil fuels is largely responsible for driving this change. European Academy of Sciences and Arts in 2007 issued a formal declaration on climate change titled Let's Be Honest:
Climate change can also be used more broadly to include changes to the climate that have happened throughout Earth's history. [32] Global warming—used as early as 1975 [33] —became the more popular term after NASA climate scientist James Hansen used it in his 1988 testimony in the U.S. Senate. [34] Since the 2000s, climate change has ...
Scientists’ confidence about how weather and climate extremes will change is growing. Projections from the Intergovernmental Panel on Climate Change’s 2021 report suggest that as human-caused ...