00:00That earthy smell after rain has a name. It's called petrichor.
00:09In 1964, two Australian scientists, Isabel Baer and Richard Thomas,
00:15coined the word from the Greek petra, meaning stone, and ichor, the fluid of the gods.
00:25During dry spells, plants release oils that soak into soil and rock.
00:30When rain hits, it traps tiny air bubbles that burst upward, spraying that scent into the air.
00:41Humans are incredibly sensitive to it.
00:44We can detect petrichor at just a few parts per trillion, one of the most sensitive smells we know.
00:54What's your favorite smell in the world? Tell me below.
