... that this issue is still with us, three clips from web-based environment sites, all taken within a few-minute span.
1) Real time map of particulate pollution across the US. This map shows PM2.5, the smallest particulates which are most damaging to the lungs:
2) EPA explanation of what the color-coding means.
Substantive update on anti-pollution efforts in China coming shortly, following this item a week ago. For now, think I will skip the gym today.