4.4 • 4.9K Ratings
🗓️ 29 August 2025
⏱️ 14 minutes
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Have you noticed especially hazy skies where you live over the last few summers? While many parts of the world are experiencing more frequent and intense wildfires, even places that are nowhere near the fires are being impacted by the smoke from fires hundreds or thousands of miles away. Wildfire smoke gets so high in the atmosphere, it can be blown across a continent in a matter of days. In this special bonus episode, we’re going to learn the how and why of wildfire smoke that drifts around the world. And we’ll talk a little bit about how to stay safe when air quality goes down. Our guests are Professor Joel Thornton of the University of Washington and Dr. Gregg Furie of Brigham and Women's Hospital in Boston.
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| 0:00.0 | But Why is brought to you by Vermont Public. |
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| 0:26.0 | Thanks for your support. |
| 0:27.2 | Now on to the episode. |
| 0:53.3 | Thank you. This is But Why, a podcast for curious kids from Vermont Public. I'm Jane Lindholm, and we're back |
| 0:55.1 | today with a quick bonus episode in between regular ones. It's a beautiful day here in Vermont as I'm |
| 1:02.4 | recording this. The sun is shining high up in a bright blue sky and fluffy clouds are floating by, |
| 1:09.6 | and the mountains in the distance are crisp and dark |
| 1:12.8 | against the horizon. But I have to say, that's not how it's been for a lot of the summer. |
| 1:19.6 | Here in the northeastern United States, where But Why is based, the past few years have brought |
| 1:24.5 | us an atmospheric phenomenon that we didn't really have all that much |
| 1:29.1 | experience with until recently. Super hazy days where the sun looks pink and the sky is a blanket |
| 1:35.9 | of gray and you can't even see the mountains. The haze is caused by wildfire smoke that has been |
| 1:42.4 | blown into our region from forest fires hundreds |
| 1:45.3 | or even thousands of miles away, often in Canada. Depending on where you live in the world, |
| 1:51.7 | you might have experienced this phenomenon recently, too. Back in 2020, we made a whole |
| 1:57.6 | episode about wildfires called What Happens to the Forest after a Fire? |
| 2:02.2 | We'll link to that episode in the show notes, but today's episode isn't about the forests or even the fires. |
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