Air Pollution Earth . ... Credit Copyright: MOPITT , Terra , NCAR CSA , NASA Explanation: Where on Earth is the air most polluted? Recently released images from the Terra satellite show not only areas of high pollution, but also how polluted air moves. In the above image , locations of higher air pollution are shown in red. ... Clearly, Earth's Northern Hemisphere shows much more CO than the south. The new data indicate, however, that pollution moves on a global scale. ...