16 thoughts on “Third Featured Haiku on Pure Haiku

  1. I had to look up “petrichor” on WIkipedia: “The term was coined in 1964 by two Australian CSIRO researchers, Isabel Joy Bear and Richard G. Thomas, for an article in the journal Nature. In the article, the authors describe how the smell derives from an oil exuded by certain plants during dry periods, whereupon it is absorbed by clay-based soils and rocks. During rain, the oil is released into the air along with another compound, geosmin, a metabolic by-product of certain actinobacteria, which is emitted by wet soil, producing the distinctive scent; ozone may also be present if there is lightning. In a follow-up paper, Bear and Thomas (1965) showed that the oil retards seed germination and early plant growth.” I have never personally noticed/savored this smell, but love that the explanation demonstrates, yet again, how interconnected life is on planet earth… Hurrah for poetry that inspires AND educates!

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