Do you love the good smell of rain? If so, you're not alone.
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00:01Why does rain smell so good?
00:04Do you love the smell of rain?
00:06If so, you're not alone.
00:08In fact, some scientists actually think
00:10that people inherited their affection
00:12for the scent of rain from our ancestors
00:14who relied on rainy weather for survival.
00:16But what makes rain smell so nice?
00:19The answer lies in several scents
00:21that permeate the air after a rainfall.
00:24One of these pleasing scents is called petrichor.
00:27This earthy scent is produced when rain falls on dry soil,
00:31and it's actually a combination of two different smells.
00:34The first comes from plants.
00:36Certain plants secrete oils during dry spells,
00:39and when it rains, these oils are released into the air.
00:42And the second odor sprouts from the soil.
00:45It comes from chemicals from soil-dwelling bacteria,
00:48and it's also released when rain hits the ground.
00:51But this petrichor scent isn't the only reason
00:54that the smell of rain is pleasing.
00:56There's also the scent of ozone.
00:58That's right, ozone.
01:00It's formed during thunderstorms
01:02when lightning causes chemical reactions
01:04to take place in the atmosphere.
01:06The sharp smell of ozone is somewhat similar to chlorine.
01:10And if you're one of those people who can smell rain coming,
01:13ozone is why.
01:15Wind can carry the molecules from an approaching storm
01:18straight into your nostrils.
01:20The scent of rain.
01:21Just another one of life's little mysteries.
01:23Just another one of life's little mysteries.
01:24Just another one of life's little mysteries.
01:25Just another one of life's little mysteries.
01:27Just another one of life's little mysteries.
01:28Just another one of life's little mysteries.
01:29Just another one of life's little mysteries.
01:30Just another one of life's little mysteries.
01:31Just another one of life's little mysteries.
01:32Just another one of life's little mysteries.
01:33Just another one of life's little mysteries.