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Plant evolution.

Plants!

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Postby mith » Thu Sep 29, 2005 9:52 pm

Supposedly Bush said we should build more air conditioners to ease global warming. But that's just Jay Leno joking.

Anyway, it would probably be easier to ease global warming in other ways than pumping ozone.

1.Fill the air with particles such as coal dust. This method been compared to when volcanos erupt spewing ashes. The dust supposedly blocks sunlight. It is also one of the hypotheses on how the Ice Age came about. Wired magazine had an article about it and promoted using more coal fired power-plants.

2.Find some sort of enzyme to decrease levels of greenhouse gas.
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Postby canalon » Fri Sep 30, 2005 12:23 am

mithrilhack wrote:Supposedly Bush said we should build more air conditioners to ease global warming. But that's just Jay Leno joking.

Anyway, it would probably be easier to ease global warming in other ways than pumping ozone.

1.Fill the air with particles such as coal dust. This method been compared to when volcanos erupt spewing ashes. The dust supposedly blocks sunlight. It is also one of the hypotheses on how the Ice Age came about. Wired magazine had an article about it and promoted using more coal fired power-plants.

2.Find some sort of enzyme to decrease levels of greenhouse gas.

I remind you, mithril, that the ozone layer has nothing to do with global warming, just with us frying under UV when the hole is too big.
As for your suggestions, the number one, if based on something true, lead to a completely stupid conclusion: coal fired power plants would generate a lot of CO2 and the dust will not go high enough in the atmosphere to shield us from the sun light. It would merely end up in our lungs which, IMHO, have enough to deal with soot from the cars, thak you.
The second enzyme, or enzyme sytem is called photosynthetic pathway... It seem indeed to be boosted by the increased CO2 concentration in the atmosphere (plants have fewer stomatas than a few centuries ago). But considering how fast we are burning forest it seems that this CO2 sink is very limited. But trapping CO2 and burying underground is already possible by chemistry and Canada is starting a program to try this method. But it has quite a lot of inconvenients:
- it's expensive (more than the rights to pollute that you can buy in the Kyoto protocol framework)
- It uses a lot of energy (and if you are producing it wit a CO2 emitting plant that seem pointless)
- The liquid CO2 has to be trucked to the burial centers, thus releasing more CO2.
It seems that there is still room for improvements in here. Come on guys who's gonna get a Nobel prize for the first artificial photosynthetic manufacture designed to consume C02?

Patrick
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Postby mith » Fri Sep 30, 2005 4:05 am

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Postby canalon » Fri Sep 30, 2005 6:37 pm

mithrilhack wrote:There is a small connection
http://www.cnn.com/NATURE/9903/29/global.warming.enn/


OK, but it states global warming increase the hole in the ozone layer, the oopsite is probably not true....

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Postby mith » Fri Sep 30, 2005 9:43 pm

Yeah, you're probably right :D
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Postby victor » Sat Oct 01, 2005 11:59 am

I can think like this, it's a little childish answer maybe.. :D ..you can use the CO2 to oxydize something and the rest, carbon atoms can be heated till thousands degree celcius and then compress it with thousands atm... in result, from carbon, you can form a diamond... :lol: but, from the financial sites, I dunno...
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Re: Plant evolution.

Postby clarence » Mon Oct 03, 2005 5:26 pm

Zenn wrote:Hi,
I was just wondering if anyone new why plants have not evolved to use the energetic ultra-violet wavelengths of light in photosynthesis. I would really appreciate a quick response.
Thanks,
Zenn.


Chlorophyll does not utilize high energy quanta because they contain too much energy. Each is powerful enough to remove electrons completely from the pigment, disrupting bonding orbitals, rendering the molecule useless. In other words, it is selectively disadvantageous for a plant to produce a pigment that is destroyed by the light it absorbs.

Hope this helps.

Clarence
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Postby MrMistery » Mon Oct 03, 2005 5:29 pm

You are totally right. How come i did not think of that? I didn't think the day will come when i would be wrong at a question about photosynthesis since it is kinda my obsession... But i guess there is a first time for everything...
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