【Phat Yeti出品】60-SECOND SCIENCE 官方听力文稿 + 讨论帖 （更新至：2008.03.07）

simon0706GUID: 2241830

I download the last five, and I truly hope it will help.

深海lavenderUID: 2350207

今天来顶了.期待更新.祝你理综取得好成绩.^^

buaa_wangchaoUID: 2179665

13号的怎么没有啊，我看官网都有了！

深海lavenderUID: 2350207

哈哈,某人昨天ESSAY被夸了开心的忘乎所以,把这事给忘了.;d:

buaa_wangchaoUID: 2179665

60-Second Science -  December 13, 2007

Malaria Parasites May Be Allies Against Drug Resistance

At least a million people die of malaria every year.  And one problem with treating the disease may be…treating the disease.  The current dosages of drugs used to fight malaria may sometimes make the problem worse—by allowing the malaria-causing parasites to become drug resistant faster.  That’s what evolutionary biologists said recently in the Proceedings of the National Academy of Sciences.

Various strains of malaria parasites compete with each other in an infected patient.  So parasites that are easier to kill actually help keep down the populations of hardier parasites.  But a big dose of drugs wipes out the weak players, leaving the field open to the resistant bugs.  Working with infected mice, the researchers found that more drugs and longer treatments tended to actually worsen the situation.  Current public health policies try to kill every last parasite.  But if the condition in people acts like it has in mice, a better idea may be to try to use the amount of medicine that will keep the person healthy—but will also let the parasites continue to duke it out with each other.

—Steve Mirsky

buaa_wangchaoUID: 2179665

60-Second Science -  December 14, 2007

Fish Farm Parasites Threaten Wild Salmon

Health news lately has had one clear recommendation: eat more foods high in omega-3 fatty acids.  And the omega oil feeding frenzy has driven up the demand for salmon.  Much of which comes from fish farms.  But in a study in the December 14th issue of the journal Science, researchers say these farms could drive wild salmon populations to extinction.  The problem is a parasite called sea lice.  They latch onto salmon skin in the open ocean.  And they also thrive in fish farms.  Adult salmon can stand to have some lice. But the parasites kill off vulnerable juveniles.

Usually, little ones swimming in a river aren't exposed to sea lice.  But in British Columbia, the plethora of fish farms near rivers means that wild juveniles are catching sea lice and dying off at alarming rates.  Scientists say within another four years, just two salmon generations, wild salmon populations could collapse by 99 percent.  They suggest two options—either put farmed fish in fully enclosed pens instead of the open nets currently used.  Or move the farms away from rivers.  Otherwise, wild salmon face a an upstream battle for survival.

—Cynthia Graber

buaa_wangchaoUID: 2179665

今天突然发现升级为高级会员了，级别够了可以传音频了，呵呵，庆祝一下，原文的格式是按照豆豆的格式来的！

深海lavenderUID: 2350207

哇...好人ING!!!
1600就高级了.
豆豆肯定感动死了.

深海lavenderUID: 2350207

再顶个.

buaa_wangchaoUID: 2179665

顶顶顶！～～～～～～～～～～

深海lavenderUID: 2350207

ＵＰ．

深海lavenderUID: 2350207

继续来勤勉地顶帖.

buaa_wangchaoUID: 2179665

:handshake

豆豆～UID: 2378384

非常感谢！！！;d: ;d:

深海lavenderUID: 2350207

咳咳.还有我呢.:o ;d: