36 minutes agoThe World's Most Contaminated Cities ( Photo)
Periskopi(8 years ago)
(8 years ago)Researchers have discovered an interactive map of carbon tracks worldwide. The largest carbon trace cities have been collected by researchers who have discovered that New York and Los Angeles are at the top of the five most polluted cities. They found that a considerable quantity of carbon emissions from [...]
The largest carbon trace cities have been collected by researchers who have discovered that New York and Los Angeles are at the top of the five most polluted cities.
They found that a considerable quantity of world carbon emissions come from just a few cities, including London, which comes in number 16.
18 percent of worldwide emissions come from just 100 cities, the latest study revealed.
This is the first time someone has drafted a full map of potential carbon tracks from cities.
Kiln, Manchester and Montreal rarely make the list of the world's mega urbans, but they all appear on top of the world's 100 countries in their carbon trace.
The chief author of the study, Daniel Moran of Norwegian University of Science and Technology (NTNU), says he was surprised by the concentration of carbon tracks at a global level.
“Top 100 cities with the largest carbon in the world make up about 20 percent of the global carbon trace. That means that co-ordinated action by a small number of local mayors and governments could significantly reduce the national carbon traces,”, he said.
Urban areas are home to about 54 percent of the world's population and make up more than 70 percent of global energy use, according to researchers.
Seoul tops the list as the most polluting city, producing 276.1 megatons of carbon dioxide annually. Chinese and Middle Eastern cities dominate on top 10.
Three Chinese cities -- Hulun buir, Hinggan and Chifeng -- appear in the number five, eight and nine, respectively. The United Arab Emirates have two entrances, as has Kuwait.
While the majority of the highest carbon trace urban areas are in high - CO2 countries, 41 out of 200 large countries, such as Daka, Cairo, Lima, are in the total emissions per head of their inhabitants, such as Bangladesh, Egypt, and Peru.
These high-source regions are also centers for concentrated economic growth, with an estimate suggesting 60 percent of world GDP, generated by only 600 urban centres.
Since emissions trails are similarly concentrated, researchers found that a relatively small number of local governments can have a disproportionate effect on reducing global emissions simply by reducing their national production.
