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  2. Greenhouse gas emissions from agriculture - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas_emissions...

    Agricultural emissions of nitrous oxide make up 6% of the United States' greenhouse gas emissions; they have increased in concentration by 30% since 1980. [76] While 6% may appear to be a small contribution, nitrous oxide is 300 times more effective at trapping heat per pound than carbon dioxide and has a residence time of around 120 years. [76]

  3. Health and environmental impact of transport - Wikipedia

    en.wikipedia.org/wiki/Health_and_environmental...

    Other environmental impacts of transport systems include traffic congestion and automobile-oriented urban sprawl, which can consume natural habitat and agricultural lands. By reducing transport emissions globally, it is predicted that there will be significant positive effects on Earth's air quality, acid rain, smog, and climate change. [6]

  4. Environmental impacts of animal agriculture - Wikipedia

    en.wikipedia.org/wiki/Environmental_impacts_of...

    Small ruminants such as sheep and goats contribute approximately 475 million tons of carbon dioxide equivalent to GHG emissions, which constitutes around 6.5% of world agriculture sector emissions. [90] Methane production by animals, principally ruminants, makes up an estimated 15-20% of global production of methane. [91] [92]

  5. Environmental impact of agriculture - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of...

    The amount of greenhouse gas emissions from agriculture is significant: The agriculture, forestry and land use sectors contribute between 13% and 21% of global greenhouse gas emissions. [25] Emissions come from direct greenhouse gas emissions (for example from rice production and livestock farming). [26] And from indirect emissions.

  6. Food miles - Wikipedia

    en.wikipedia.org/wiki/Food_miles

    Transport (in red) is only a very small share in food GHG emissions. Lifecycle analysis, a technique that meshes together a wide range of different environmental criteria including emissions and waste, is a more holistic way of assessing the real environmental impact of the food we eat. The technique accounts for energy input and output ...

  7. Greenhouse gas emissions by the United States - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas_emissions...

    In 2020, 27% of the GHG emissions of the United States were from transportation, 25% from electricity, 24% from industry, 13% from commercial and residential buildings and 11% from agriculture. [13] U.S. energy-related CO2 emissions decreased by 3% in 2023, amounting to a reduction of approximately 134 million metric tons (MMmt).

  8. Greenhouse gas emissions - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas_emissions

    Flaring and venting of natural gas in oil wells is a significant source of greenhouse gas emissions. Its contribution to greenhouse gases has declined by three-quarters in absolute terms since a peak in the 1970s of approximately 110 million metric tons/year, and in 2004 accounted for about 1/2 of one percent of all anthropogenic carbon dioxide ...

  9. Climate change and agriculture in the United States - Wikipedia

    en.wikipedia.org/wiki/Climate_change_and...

    In the United States, agriculture is the second largest emitter of greenhouse gases (GHG), behind the energy sector. [1] Direct GHG emissions from the agricultural sector account for 8.4% of total U.S. emissions, but the loss of soil organic carbon through soil erosion indirectly contributes to emissions as well. [2]