Air (E09)

The air we breathe is in jeopardy with an increase in greenhouse gases, both polluting the air and trapping pollution under the smog. Industrial pollution leading to an airpocalypse is just the start. Methane frozen in permafrost is being released as the northern ice melts. And an increase in carbon dioxide – food for plants – means pollen is also on the rise. This episode explores the various causes of our compromised air. (PBS)