Why Rain Smells So Good: The Science Behind Petrichor

Almost everyone recognizes the crisp, earthy scent that fills the air just as a sudden summer downpour hits dry soil. That fresh, comforting aroma is known as petrichor, a term created in nineteen sixty-four by two Australian researchers studying environmental scents. The word combines two Greek terms, petra meaning stone, and ichor, which refers to the ethereal fluid that flowed in the veins of ancient gods.