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microrobert
02-03-2015, 08:09 PM
How the smell of-rain happens

The fresh aroma after a summer downpour is one of life's pleasing scents.

The earthy fragrance was named petrichor by Australian researchers in 1964. They described it as a combination of plant oils and the chemical compound geosmin which are released from the soil when it rains.

Now researchers from Massachusetts Institute of Technology (MIT), USA, believe they have captured this event happening and shown how the smell gets into the air.

http://www.bbc.com/earth/story/20150115-how-the-smell-of-rain-happens