How Wind Affects air Pollution PM2.5 and Dust

Wind, Not Rain, Reduces Air Pollution

It’s wind, not rain, that reduces air pollution. It sounds so simple, yet on rainy days, many people believe it’s the rain that’s “washing away” air pollution. Data shows otherwise. Rain is poor at clearing air pollution from the skies. Most of the time, it’s wind that blows pollution away … Read more

Size of pollen particles 10 microns to 200 microns cherry willow pine grass pollen feature

Can Masks Filter Pollen and Prevent Hay Fever?

Every year, spring’s blossoms bring with them wave of pollen. For places like Beijing, it’s also the start of the ‘snowy season’, with the hundreds of willow trees producing their fluffy catkin friends and the sniffles that follow. But how can we avoid the uncomfortable coughing and sneezing? Which masks … Read more

PM2.5 vs. PM10: The Difference in Particle Air Pollution

PM2.5 and PM10 are the two types of air pollution that the WHO estimates affect “more people than any other pollutant,” but they are different. Here’s how the two contrast. PM2.5 vs. PM10 The difference between PM10 and PM2.5 is size. But before we get to size, “PM” refers to particulate … Read more

What’s the Difference Between PM2.5 and PM10?

The difference between PM10 and PM2.5 is size. “PM” refers to particulate matter—particles in the air. Those particles are things like organic dust, airborne bacteria, construction dust, and coal particles from power plants (here’s what researchers in Shanghai found when they collected air pollution particles and found out what they were … Read more

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