The after-rain smell is called petrichor
Today’s Video of the Day comes from the American Chemical Society’s Reactions series and explains how the distinct smell that fills the air after a fresh rain is called petrichor.
Petrichor is derived from the Greek language and means “blood of stones,” originally coined in the 1960s by Australian scientists Richard Thomas and Isabel Bear.
The two main sources of the scent are plants and bacteria living in soil. Petrichor refers to the yellow oil that can be extracted from rocks, clay, and soil and contains fatty acids from plants.
Video Credit: American Chemical Society