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  2. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    Maximum limits are 2.7 grams per kilometre (4.35 g/mi) of CO, 0.39 grams per kilometre (0.63 g/mi) of HC, and 0.48 grams per kilometre (0.77 g/mi) of NO x. One interesting detail of the Japanese emissions standards was that they were introduced in a soft manner; that is, 1978 model year cars could be sold that did not meet the 1978 standards ...

  3. Regulation of greenhouse gases under the Clean Air Act

    en.wikipedia.org/wiki/Regulation_of_greenhouse...

    The petitioners argued that carbon dioxide (CO 2), methane (CH 4), nitrous oxide (N 2 O), and hydrofluorocarbons meet the definition of an air pollutant under section 302(g) of the Act, and that statements made by the EPA, other federal agencies, and the United Nations Intergovernmental Panel on Climate Change (IPCC) amounted to a finding that ...

  4. List of countries by carbon dioxide emissions - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    In 2023, global GHG emissions reached 53.0 Gt CO 2 eq (without Land Use, land Use Change and Forestry). The 2023 data represent the highest level recorded and experienced an increase of 1.9% or 994 Mt CO 2 eq compared to the levels in 2022. The majority of GHG emissions consisted of fossil CO 2 accounting for 73.7% of total emissions. [4]

  5. Greenhouse gas emissions - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas_emissions

    The sharp acceleration in CO 2 emissions since 2000 to more than a 3% increase per year (more than 2 ppm per year) from 1.1% per year during the 1990s is attributable to the lapse of formerly declining trends in carbon intensity of both developing and developed nations. China was responsible for most of global growth in emissions during this ...

  6. List of U.S. states and territories by carbon dioxide emissions

    en.wikipedia.org/wiki/List_of_U.S._states_and...

    Carbon emissions per capita, 2020 Carbon emissions per 1000 square miles, 2020. This is a list of U.S. states and territories by carbon dioxide emissions for energy use, [1] [2] as well as per capita [3] [4] and by area.

  7. List of countries by carbon intensity of GDP - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    World map of emission intensity (kg of CO 2 per Intl$), 2018. The following list of countries by carbon intensity of GDP sorts countries by their emission intensity.Carbon intensity or emission intensity of GDP is a measure that evaluates the amount of carbon dioxide (CO 2) emissions produced per unit of GDP.

  8. ChatGPT produces the same amount of CO2 emissions as ... - AOL

    www.aol.com/finance/chatgpt-produces-same-amount...

    ChatGPT only produces 1.59 grams of CO2 per page view—compared with Rytr’s 10.1 and Spellbook’s 6.5. On the other hand, ChatGPT—which boasts more than 164 million monthly users—is ...

  9. Carbon footprint - Wikipedia

    en.wikipedia.org/wiki/Carbon_footprint

    The carbon footprint explained Comparison of the carbon footprint of protein-rich foods [1]. A formal definition of carbon footprint is as follows: "A measure of the total amount of carbon dioxide (CO 2) and methane (CH 4) emissions of a defined population, system or activity, considering all relevant sources, sinks and storage within the spatial and temporal boundary of the population, system ...