European Space Agency images show the difference in nitrogen dioxide concentrations in France, Italy and Spain between March 2019 and March 2020. Pollution levels have decreased across Europe as the countries are applying containment measures to try to stop the spread of the new coronavirus.
These initial data will be supplemented by a more detailed analysis by scientists from around the world who collect information on observed concentration rates "in order to estimate the influence of containment measures, reports the European Space Agency.