The Earthy Aroma of Petrichor and Geosmin

This educational image explains petrichor and geosmin, the smell of rain, showing chemical structures, sources like blue-green algae and lightning, and etymological roots in Greek. It features four panels: a diagram of petrichor's components, a mossy rock photo with Greek word origins, a geosmin molecule structure, and a photo of rain-soaked seedlings with the word 'Geosmin' and its Greek etymology. The overlaid text defines petrichor as 'stone ichor' and geosmin as 'earth smell'.

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