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SSS 2009-02-03

时间:2010-05-17 03:10来源:互联网 提供网友:木渐浅。   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute?

 

Mosquitoes have an unwitting new ally in the war on infectious diseases—conservationists. Turns out that, for mosquitoes carrying dengue-fever, environmentally conscious humans may be aiding the invasion. That’s the finding of a study published in the journal Functional1 Ecology.

 

In Australia, severe drought has led citizens to capture and store rainwater. While that's good for water conservation, the resulting array of water-storage tanks provides the perfect breeding ground for an army of mosquitoes.

 

The researchers say mosquitoes around the world are already moving into areas experiencing the warmer, wetter effects of climate change. Adding accessible pools of water to countless2 backyards will only help increase the insect's range.

 

For Australia's dengue mosquitoes, the researchers are also concerned about the development of drought-resistant eggs. Other insects have already evolved eggs that can withstand dry-spells. If the dengue mosquito follows suit, even the arid3 Outback could someday promote mosquito-borne illness. But there's a powerful way to interfere4 with the entire process: simply cover up water containers.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Adam Hinterthuer.

 


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1 functional 5hMxa     
adj.为实用而设计的,具备功能的,起作用的
参考例句:
  • The telephone was out of order,but is functional now.电话刚才坏了,但现在可以用了。
  • The furniture is not fancy,just functional.这些家具不是摆着好看的,只是为了实用。
2 countless 7vqz9L     
adj.无数的,多得不计其数的
参考例句:
  • In the war countless innocent people lost their lives.在这场战争中无数无辜的人丧失了性命。
  • I've told you countless times.我已经告诉你无数遍了。
3 arid JejyB     
adj.干旱的;(土地)贫瘠的
参考例句:
  • These trees will shield off arid winds and protect the fields.这些树能挡住旱风,保护农田。
  • There are serious problems of land degradation in some arid zones.在一些干旱地带存在严重的土地退化问题。
4 interfere b5lx0     
v.(in)干涉,干预;(with)妨碍,打扰
参考例句:
  • If we interfere, it may do more harm than good.如果我们干预的话,可能弊多利少。
  • When others interfere in the affair,it always makes troubles. 别人一卷入这一事件,棘手的事情就来了。
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