只用一本书提高英语听力能力!重温经典名著双语阅读小编推荐:跟着纪录片学英语不背单词和语法,轻松学英语
返回列表 回复 发帖

[科学美国人60秒] 【整理】SSS 2008-07-02

提高英语听力能力 找对方法很重要!

on 笨鸟追日

This is Scientific Americans 60-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. Cows give off methane, you know, after they eat.

 

Even the surface waters of the ocean contains substantial amounts of this gas. But where marine methane comes from is a mystery until now. Scientists collected sea water off the coast of Hawaii. And they found the bacteria / living in these waters scarf up certain phosphorous-containing chemicals. And then release 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 swamp or with the market that abound with mucky pond. This marine methane could contribute to global warming by adding more greenhouse gases to the atmosphere. What's worse, the hotter it is, the more stressed the seafaring bacteria get and the more methane they are likely to put out which will certainly not the kind of feedback that atmosphere scientists were hoping to get.

 

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

当务之急:学好日语
From mud, through blood, to the green fields beyond.

on bigdaxiami

This is Scientific Americans Sixty Seconds Science. I'm Karren Hopkin. This 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 or even farming. Cows give off methane you know, after they eat.

 

Even the surface waters 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 off Hawaii. And they found the bacteria / living in these waters scarf up certain phosphorous-containing chemicals.And then 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 the smell associated with a swamp or with the muck at the bottom of a murky pond. This marin methane could contributed to global warming by adding more greenhouse gases to the atmosphere. What's worse, the hotter it is, the more stressed these sea-faring bacteria get and the more methane they're likely to put out which was certainly not the kind of feedback that atmospheric scientists were hoping to get.

 

Thanks for the minute for Scientific Americans Sixty Seconds Science. I'm Karren Hopkin. [ 本帖最后由 byatbj07 于 2008-7-3 10:26 编辑 ]
当务之急:学好日语
From mud, through blood, to the green fields beyond.
返回列表