Asbestos..?

Question

how is it related to air pollution?

Answer 1

Because the fibers are so industructible

Answer 2

It's the dust (airborne) particles that are dangerous to humans.  Once you encapsulate the asbestos source it isn't dangerous at all.  As far as pollution goes it's not a big concern.

Answer 3

"The most dangerous asbestos fibers are too small to be visible. After they are inhaled, they can remain and accumulate in the lungs. Asbestos can cause lung cancer, mesothelioma (a cancer of the chest and abdominal linings), and asbestosis (irreversible lung scarring that can be fatal). Symptoms of these diseases do not show up until many years after exposure began. Most people with asbestos-related diseases were exposed to elevated concentrations on the job; some developed disease from exposure to clothing and equipment brought home from job sites."