bartc · Chief of the Research Division (retired) · ✭

General ambient air pollution is listed as a carcinogen by the WHO and it contains many known individual carcinogens (diesel soot, PAHs, benzene, etc.). Any efforts to remove gases and particles from… (View Post)

@jamesburbridge The global atmosphere is very efficient at removing health-damaging particle and gaseous pollution over the time scale of hours to days through rain out, chemical reactions (ultimatel… (View Post)

@akb Very nice summary of strategies, many that we've tried here in California. Here's what seems to be the most effective, in priority order: * Fuel changes (e.g., lead-free gasoline, benzene limits… (View Post)

Note that near-roadway dust and vehicle component wear dominates over tailpipe PM in California, but only because we've put a filter on all diesel engines. Tailpipe emissions, especially from diesel … (View Post)

@JessicaYoon Pollutant removal from ambient air is inherently less efficient than removing it in its concentrated form from tailpipes (catalytic converters, diesel particle traps), smokestacks (bagho… (View Post)