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Author Topic: Has all the air in the world been breathed before?  (Read 4382 times)

Offline thedoc

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Hello - I really enjoy your podcast.

I don't know when you might be discussing something related to this but ...  I was listening to a Johnny Cash tune the other day and he wanted to get away from this woman and "go where the air ain't been breathed before". Is that possible (that the air hasn't been breathed before)? Especially in light of the thousands of species that have preceded us. Thanks.

Tom Aust
Northern California
Asked by Tom Aust


                                        Visit the webpage for the podcast in which this question is answered.

 ...or Listen to the Answer or [download as MP3]

« Last Edit: 02/02/2012 13:05:05 by _system »


 

Offline Don_1

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Has all the air in the world been breathed before?
« Reply #1 on: 03/11/2011 11:56:28 »
I should think just about every atom of our atmosphere has done the rounds many times over.
 

Offline Bored chemist

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Has all the air in the world been breathed before?
« Reply #2 on: 03/11/2011 18:47:24 »
Not quite all of them. There are some that certainly have not.
 

Offline neilep

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Has all the air in the world been breathed before?
« Reply #3 on: 03/11/2011 20:41:29 »
I saw a piece of air today and it looked brand newe !
 

Offline CliffordK

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Has all the air in the world been breathed before?
« Reply #4 on: 03/11/2011 20:52:35 »
I saw a piece of air today and it looked brand newe !

You must have been visiting Eyjafjallajökull, Iceland!!!

Other than the volcanic origin of components in the air, most of the Tritium and Carbon-14 components in the air come from the sun, and are relatively new.
« Last Edit: 03/11/2011 20:58:31 by CliffordK »
 

Offline neilep

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Has all the air in the world been breathed before?
« Reply #5 on: 04/11/2011 00:07:21 »
I saw a piece of air today and it looked brand newe !

You must have been visiting Eyjafjallajökull, Iceland!!!

Other than the volcanic origin of components in the air, most of the Tritium and Carbon-14 components in the air come from the sun, and are relatively new.

Funny that !..were ewe taking the tour too ?  ;)





 

Offline CliffordK

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Has all the air in the world been breathed before?
« Reply #6 on: 04/11/2011 01:42:50 »
You must have been visiting Eyjafjallajökull, Iceland!!!
Funny that !..were ewe taking the tour too ?  ;)

Nope, never been there.
But, it is the coolest name of a mountain that I know...
Did you learn how to pronounce it?  I'm sure it is pronounced just like it is spelled :-\
 

Offline Geezer

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Has all the air in the world been breathed before?
« Reply #7 on: 04/11/2011 05:53:59 »
Some bits, yes. Most (all?) of the oxygen in the atmosphere was produced because living things exhaled it.
 

Offline CliffordK

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Has all the air in the world been breathed before?
« Reply #8 on: 04/11/2011 06:12:38 »
Some bits, yes. Most (all?) of the oxygen in the atmosphere was produced because living things exhaled it.
The question was about breathing... not photosynthesis.
 

Offline Geezer

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Has all the air in the world been breathed before?
« Reply #9 on: 04/11/2011 06:17:24 »
Some bits, yes. Most (all?) of the oxygen in the atmosphere was produced because living things exhaled it.
The question was about breathing... not photosynthesis.

What's the difference? Plants have to breathe too ewe know.
 

Offline RD

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Has all the air in the world been breathed before?
« Reply #10 on: 04/11/2011 06:48:15 »
Some of the gases in the air we breathe have come from decay of heavy radioactive elements in rocks ...

Quote
Other important examples of radiogenic elements are radon and helium, both of which form during the decay of heavier elements in bedrock.
http://en.wikipedia.org/wiki/Radiogenic

So have never been breathed before.
« Last Edit: 04/11/2011 07:02:09 by RD »
 

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Has all the air in the world been breathed before?
« Reply #10 on: 04/11/2011 06:48:15 »

 

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