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Cumulatively, the United States has emitted over a trillion metric tons of greenhouse gases, more than any country in the world. [1] Climate change policy is developed at the local, [need quotation to verify] state, and federal levels of government. [2] The Environmental Protection Agency (EPA) defines climate change as "any significant change ...
The climate of the United States is shifting in ways that are widespread and varied between regions. [4][5] From 2010 to 2019, the United States experienced its hottest decade on record. [6] Extreme weather events, invasive species, floods and droughts are increasing. [7][8][9] Climate change's impacts on tropical cyclones and sea level rise ...
Projected economic impacts of 2 degrees of global warming on Senegal. There are a number of benefits of using aggregated assessments to measure economic impacts of climate change. [4]: 954 They allow impacts to be directly compared between different regions and times. Impacts can be compared with other environmental problems and also with the ...
1.4–3.8 °C. Climate Change 2007, the Fourth Assessment Report (AR4) of the United Nations Intergovernmental Panel on Climate Change (IPCC), was published in 2007 and is the fourth in a series of reports intended to assess scientific, technical and socio-economic information concerning climate change, its potential effects, and options for ...
Throughout the 1970s and 1990s, an economic policy to move the United States economy away from nonrenewable energy was developed by activists in the labor and the environmental movements. [ 12 ] An early use of the phrase "Green New Deal" was by journalist Thomas Friedman . [ 13 ]
The effects of climate change on the water cycle have important negative effects on the availability of freshwater resources, as well as other water reservoirs such as oceans, ice sheets, the atmosphere and soil moisture. The water cycle is essential to life on Earth and plays a large role in the global climate system and ocean circulation.
Climate change mitigation (or decarbonisation) is action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include conserving energy and replacing fossil fuels with clean energy sources. Secondary mitigation strategies include changes to land use and removing carbon dioxide (CO 2) from ...
The water cycle (or hydrologic cycle or hydrological cycle), is a biogeochemical cycle that involves the continuous movement of water on, above and below the surface of the Earth. The mass of water on Earth remains fairly constant over time. However, the partitioning of the water into the major reservoirs of ice, fresh water, salt water and ...