Carbon footprints: National emissions

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  • Image: Distantbody / Wikimedia Commons

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  • Image: Paul Glazzard / Wikimedia Commons

  • Image: SeaWiFs Project, NASA / Goddard Space Flight Center / ORBIMAGE

    There are several different methods of determining the national emissions of different countries, including the total amount emitted by a nation, the ‘per capita’ amount emitted for each of its citizens, and the cumulative amount the nation has emitted over the entire historical period. Each approach gives different insights. However, calculating the comparative carbon footprints of different countries isn’t straightforward, and different methods can give conflicting results.