[stereoradonc]

This is a known fact: PM 2.5 causes irreversible inflammation of the specific cells, leading to an immune cascading effect that may go unregulated. The timing of the news is with the Oncology conference, so it attracts more attention. It is rehashed news. It requires an environmental clean up, but must be balanced by the costs. It is usually difficult to reverse sunk costs for prior human activity. Often, it requires careful deliberation around vehicular pollution.