Curiosity Corner: Why does rain smell good?
The delightful scent of rain, known as petrichor, arises from plant oils released by dry soil when droplets fall. Soil bacteria called actinomycetes also contribute an earthy aroma through geosmin. Raindrops create aerosols, spreading the smell, while ozone from lightning adds a fresh, clean note, evoking ancient survival instincts and a sense of renewal.
The delightful scent of rain, known as petrichor, arises from plant oils released by dry soil when droplets fall. Soil bacteria called actinomycetes also contribute an earthy aroma through geosmin. Raindrops create aerosols, spreading the smell, while ozone from lightning adds a fresh, clean note, evoking ancient survival instincts and a sense of renewal.
