You know that smell after it rains? Here's where it comes from

January 18, 2015 8:16 PM

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You know that smell after it rains? Here's where it comes from

You know how, when it rains, there's often a particular smell to the air? It's an earthy aroma that is usually most apparent at the beginning of a spring rain shower, for example. Apparently, scientists had not yet discovered the reason for this pleasant scent... until now.

According to a new study published this week in the journal Nature Communications, when raindrops land on certain porous surfaces, they can trap tiny air bubbles containing small particles, which then shoot upward, into the air. These aerosols are likely responsible for carrying aromatic elements, a...

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