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[科学美国人60秒] 【整理】SSS 2008-07-02

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on  dklove

 

This is Scientific Americans Sixty Seconds Science. I'm Karren Hopkin. It will just take a minute.


Methane is a greenhouse gas that traps heat even better than carbon dioxide. It comes from a variety of sources including fossil fuel production when even farming. Caws give off methane you know, after they eat.

 

Even the surface water of the ocean contains substantial amounts of this gas. But where marine methane comes from was a mystery until now. Scientists collected sea water of the coast of Hawaii. And they found the bacteria that living in these waters scare from certain fast-rate-containing chemicals. And that released methane as a by-product. The results appear online in the journal Nature Geo- Science.

 

What's surprising is that scientists previously thought that methane is only produced by bacteria that live in places where there is no oxygen. Think of these smell associated with the swan or with the market that abound with murky pound. This marin methane could contributed to global warming by adding more greenhouse gases to the atmosphere. What's worse, the harder it is, the more stress the sea  fill in the bacteria gap and the more methane / is likely to put out which will certainly not the kind of feed back that atmosphere scientists were hoping to get.

 

Thanks for the minute for Scientific Americans Sixty Seconds Science. I'm Karren Hopkin.

[ 本帖最后由 笨鸟追日 于 2008-7-3 09:16 编辑 ]
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  • zpc224

All ways lead to Rome !
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