A meadow reflects in a raindrop hanging from a blade of grass in Dresden, Germany. Robert Michael/dpa/AFP via Getty Images hide caption
A meadow reflects in a raindrop hanging from a blade of grass in Dresden, Germany.
Robert Michael/dpa/AFP via Getty ImagesEncore episode! Scientists have known for decades that one of the main causes of the smell of fresh rain is geosmin: a chemical compound produced by soil-dwelling bacteria. But why do the bacteria make it in the first place? Reporter Emily Vaughn answers this bacteria-based mystery.
In this episode, we hear from Klas Flärdh, a professor of microbiology at Lund University in Sweden; Mahmoud Al-Bassam, a researcher at University of California, San Diego; and Paul Becher, a chemical ecologist and a researcher at the Swedish University of Agricultural Sciences.
You can find their paper in Nature Microbiology here.
Other scent mysteries driving your nose wild? Email the show at shortwave@npr.org and we might track down the answer.
This episode was produced by Rebecca Ramirez, edited by Viet Le, and fact-checked by Berly McCoy and Emily Vaughn.
The Link LonkJune 10, 2021 at 11:30AM
https://www.npr.org/2021/06/09/1004815653/the-science-behind-that-fresh-rain-scent
The Science Behind That Fresh Rain Scent : Short Wave - NPR
https://news.google.com/search?q=fresh&hl=en-US&gl=US&ceid=US:en
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