What causes the smell after rain?

Salam..today i read some article What causes the smell after rain?
Most people notice a distinctive smell in the air after it rains. It's frequently linked with spring, as the smell of fresh cut grass is associated with summer. You'll find it in a lot of poetry and also on many inspirational lists of things to be happy about. But what causes it?
As it turns out, the smells people associate with rainstorms can be caused by a number of things. One of the more pleasant rain smells, the one we often notice in the woods, is actually caused by bacteria! Actinomycetes, a type of filamentous bacteria, grow in soil when conditions are damp and warm. When the soil dries out, the bacteria produces spores in the soil. The wetness and force of rainfall kick these tiny spores up into the air where the moisture after a rain acts as an aerosol (just like an aerosol air freshener). The moist air easily carries the spores to us so we breathe them in. These spores have a distinctive, earthy smell we often associate with rainfall. The bacteria is extremely common and can be found in areas all over the world, which accounts for the universality of this sweet "after-the-rain" smell. Since the bacteria thrives in moist soil but releases the spores once the soil dries out, the smell is most acute after a rain that follows a dry spell, although you'll notice it to some degree after most rainstorms.

Another sort of smell is caused by the acidity of rain. Because of chemicals in the atmosphere, rainwater tends to be somewhat acidic, especially in urban environments. When it comes in contact with organic debris or chemicals on the ground, it can cause some particularly aromatic reactions. It breaks apart soil and releases minerals trapped inside, and it reacts with chemicals, such as gasoline, giving them a stronger smell. These reactions generally produce more unpleasant smells than bacteria spores, which is why the after-the-rain smell isn't always a good one. Like the smell caused by the bacteria spores, the smell of chemical reactions is most noticeable when it rains following a dry spell. This is because once the chemicals on the ground have been diluted by one downpour, they don't have the same reaction with the rainwater.
that's all.

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good information to you all

Salam..how are you? i hope u fine..you know this fact??
read this..The Heaviest Building Ever Moved
Building 1: Fu Gang Building (15,140 tons)
When it comes to big moves, it's only a matter of time before a record is broken. The current record holder in the book of Guinness World Records for heaviest structure moved intact is a building in China. The Fu Gang building weighs in at 15,140 tons, or 33.3 million pounds. It had to be moved over about 118 feet (36 meters), and it took 11 days to move it [source: Guinness World Records]. As this writer doesn't speak Chinese and all of the research written on this building is in Chinese, it's difficult for her to tell you much else about this historic move. So let's just take a moment to appreciate again that the Chinese moved a building that weighed 15,140 tons. How long will it take to break the record? The big moves on this list show that it's only a matter of time and determination.
woo..that amazing..maybe we can ask for incredible hulk help..hihi..

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diet

salam..here has 3 Steps to a Healthier You
1. Follow a balanced exercise program. A brisk 30-minute walk while enjoying the sunset will burn 1,500 calories per week -- that's 78,000 calories a year! Cardio is great for your heart and lungs, but add a couple sessions of weight training to tone or build muscle.
2. Schedule family fitness time. Play basketball, chase a Frisbee, or hike the hills together. You'll be getting closer to each other as you shape up.
3. Invest in a jump rope. It's a great workout anytime. Set a goal of skipping rope for ten minutes per day and watch those love handles melt away.it's easy right?
so let's do it now!!

bird (dodo)

Salam, today I have read about Dodos.Dodos were flightless birds the size of large turkeys.
In 1598 a Dutch trading vessel landed on Mauritius and its sailors found that the birds were good to eat and easy to catch. With the introduction of hogs, cats, rats, and monkeys by colonists, who arrived in 1638, the dodo population was exterminated. The last living dodo was seen in 1681.
Solitaires, birds related to the dodo, lived on the nearby islands of Runion and Rodriguez. By 1800 they, too, had become extinct.
The dodo and the solitaires belonged to the family Raphidae. The dodo was Raphus cucullatus; the Runion Island solitaire, R. solitarius; the Rodriguez Island solitaire, Pezophaps solitaria.So, it now became Extinct Animals.

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