When it rains after a prolonged period of dry weather, there is a smell created. It's called Petrichor. A wonderful word, and utterly useless trivia item. The smell is caused by something call Geosmin, which is produced by bacteria in the soil. Humans can smell it at 5 parts per TRILLION. In contrast Sharks can detect blood at concentrations of 1 part per million. On this one substance, we have a better sense of smell than sharks do for blood. Humans are amazing!
@quixoticgeek Every time I hear that word, all I can think of is that Doctor Who episode where Petrichor--or rather, the thought of what it means--is part of a password. That's where I learned what that word means. Who says sci-fi isn't educational?
@quixoticgeek @alexhall
Some people really enjoy Dr Who.
Some people don't understand it.
Others think it is just silly.
Maybe time & place, culture.
But then, say, I think that all theism is silly. Others disagree.
Different folks.