Support WBUR'We Don't Have To Live This Way': Doctors Call For Climate ActionPlay03:32Download AudioRebecca HersherDecember 02, 2020 ShareA Portland, Ore., resident wears a respirator to protect himself from wildfire smoke as he jogs in downtown in September 2020. (AFP via Getty Images)
A Portland, Ore., resident wears a respirator to protect himself from wildfire smoke as he jogs in downtown in September 2020. (AFP via Getty Images)