Ever breathed in deeply after a rainfall because the air smelled so good? That distinct rain smell that you associate with summer and your childhood and everything that's good and right in the world?

Petrichor: It's a great word and an even better smell — the one that hangs in the air after a rain storm. By filming raindrops in super-slow-motion, MIT researchers think they've figured out how this ...

Ever wondered what the scent lingering after a fresh rainfall may be, if anything at all? According to scientists it's called "petrichor," a phenomenon when oils and chemicals are released after ...