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The Smell of Rain

You learn something new every day. The scent of rain is caused by a collection of botanical oils called petrichor mixed with the organic compound geosmin. These compounds are
kicked up from the earth by rain and are particularly pronounced following the first rain after a long dry spell.

See also: this article on TYWKIWDBI.

Posted on June 2, 2009 11:55 PM |

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