TwitterAge matters: Krakow’s remote sensing campaign
In January 2019, the city of Krakow achieved a record that is not a cause for celebration: exceeding the World Health Organization’s air pollution limits by a factor of four. While the use of coal and wood for heating are major source of pollution in Poland, on-road transportation is the second largest contributor comes in second and is the largest source of nitrogen oxides (NOx) in the country.
