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The United States produced 5.2 billion metric tons of carbon dioxide equivalent greenhouse gas (GHG) emissions in 2020, [6] the second largest in the world after greenhouse gas emissions by China and among the countries with the highest greenhouse gas emissions per person.
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. [5] The state with the highest total carbon dioxide emissions is Texas and the lowest is Vermont. The state with the highest per capita carbon dioxide emissions is Wyoming and the lowest is New York.
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 ...
The algorithms of ecological footprint accounts have been used in combination with the emergy methodology (S. Zhao, Z. Li and W. Li 2005), and a sustainability index has been derived from the latter. They have also been combined with a measure of quality of life , for instance through the " Happy Planet Index " (HPI) calculated for 178 nations ...
Considering GHG per capita emissions in 2023, China's levels (11.11) are almost two-thirds those of the United States (17.61) and almost a sixth of those of Palau (65,29) – the country with the highest emissions of GHG per capita in 2023. [6]
Biocapacity used in correlation to ecological footprint can therefore suggest whether a specific population, region, country or part of a world is living in the means of their capital. Accordingly, the study of biocapacity and ecological footprint is known as the Ecological Footprint Analysis (EFA). [1]
These factors are used to calculate the user's estimated carbon footprint. Based on a user's carbon footprint, the app calculates a monthly subscription fee. The company keeps 30% of this fee (10% for operating costs and 20% for marketing budget), and the remaining 70% goes to carbon offsetting projects of the user's choice. [ 1 ]
The Kaya identity is a mathematical identity stating that the total emission level of the greenhouse gas carbon dioxide can be expressed as the product of four factors: human population, GDP per capita, energy intensity (per unit of GDP), and carbon intensity (emissions per unit of energy consumed).
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