Don't transfer the ox's load to the cow

Eight hundred and fifty monitoring stations.
Weather and traffic reports
from 2012 to 2019.

Daily air pollution maps
for Fresno, Los Angeles, Sacramento.

A nearly block-by-block picture.

Situated far from Kept away from
high-income neighborhoods.
Freeways, ports, railyards.

The lower-income areas saw the biggest decline
because they had the most pollution to begin with.

Collected as little as once a year —
from monitoring stations
that are miles away from people's homes.

They don't put rail yards in Piedmont.

Whose lungs were the first monitors?