Tag Archives: Portland

Seattle and Portland Air is Now Dirtier Than Most Polluted Cities in Asia

For now, two of America’s cleanest cities have dirtier air than the the most polluted cities in Asia. IN THE DAMP and dreary Pacific Northwest, where moss climbs the trees and moisture dribbles down lamp posts and seems to seep through … Continue reading

Quote | Posted on by | Tagged , , , , , , , , , , | Leave a comment

Air quality at ‘unhealthy’ level in Portland due to wildfires 

A smoky haze from wildfires across the state has settled into the Portland metro area and other parts of the Willamette Valley. Tuesday’s air quality is the worst it has been in weeks, categorized as “unhealthy” most of the afternoon … Continue reading

Posted in Air Quality, USA & Canada | Tagged , , , , | Leave a comment

Portland air quality remains unhealthy, but some relief may come Friday 

Portland’s air quality rating remains unhealthy on Friday, although some relief may come later in the day. The thick haze from wildfires in British Columbia has blanketed the Portland area this week amid record heat. KGW chief meteorologist Matt Zaffino says westerly winds … Continue reading

Posted in Air Quality, USA & Canada | Tagged , , , , | Leave a comment

The Moss That Saved Portland 

Roadside plants helped officials trace the source of a public health crisis and led to new standards for clean air in Oregon. Orthotrichum lyellii is the hero of this story. You’ve probably met it before: a tuft of green with … Continue reading

Posted in Air Quality, USA & Canada | Tagged , , , , | Leave a comment

Moss is useful bioindicator of cadmium air pollution, new study finds 

Moss growing on urban trees is a useful bio-indicator of cadmium air pollution in Portland, Oregon, a U.S. Forest Service Pacific Northwest Research Station-led study has found. The work–the first to use moss to generate a rigorous and detailed map … Continue reading

Posted in Air Quality, USA & Canada | Tagged , , , , , , | Leave a comment