Is It a Good Idea to Control Population Growth in the World?

Lesson 9 Is It a Good Idea to Control Population Growth in the World? Text What Overpopulation Feels Like We moved slowly through the city in a taxi and entered a crowded slum district. The temperatur

科学美国人60秒 SSS When Dining for Trillions, Eat Wisely

You are what you eat, the old expression goes. But it leaves out one crucial detail. We don't dine alone. We dine with trillions of friends. Jeff Gordon, a microbiologist at Washington University in Saint Louis. And they are partners in consuming the

科学美国人60秒 SSS When We Fly to Mars, Microbes Will, Too

When We Fly to Mars, Microbes Will, Too 飞向火星的不止是你，还有我 A humid bathroom is the perfect habitat for mold. But there are ways to avoid it. We can just open the window and let some fresh air in! Not so easy on a space station th

美国科学60秒 SSS 2013-08-30

Everywhere you go, the trillions of microbes in your gut go, too. And that's a comforting thought, because according to a new study, a more diverse population of intestinal bacterias is linked to better health. The work is in the journal Nature. Dani

美国科学60秒 SSS 2013-08-29

everywhere you go ,the trillions of microbes in your gut go,too.and that's a comforting thought,because according to a new study,a more diverse population of intestinal bacteria is linked to better health. the work is in the journal Nature.Danish res

[科学美国人60秒] SSS 2015-09-23

You might blame your pets for shedding all over the house, but we humans do it, too, and our staff is alive. We are constantly meeting microbes around us, and this is coming from shedding our skin, from exhaling, and our hair, and we are just full of

SSS 2010-03-16

They say that who you hang out with says a lot about who you are. Well, the microbes that hang out on your fingers can point to exactly who you are. Because scientists at the University of Colorado in Boulder have been able to identify individuals ba

新标准初中英语九年级(下):UNIT1 World population

[00:01.84]3 Listen and complete. [00:06.70]What have the children done for their project [00:10.30]on population? [00:11.96]Listen and complete their sentences. [00:16.14] [01:04.64]4 Listen and complete. [01:08.78]Listen and fill in the missing info

60秒科学:你身上的细菌"身份证"

相信吗？你身上寄生的细菌群有辨识身份的功能。 They say that who you hang out with says a lot about who you are. Well, the microbes that hang out on your fingers can point to exactly who you are. Because scientists [Noah Fierera e

DEVELOPMENT REPORT - World Population by 2050

DEVELOPMENT REPORT - World Population by 2050 By Jill Moss Broadcast: Monday, August 30, 2004 This is Gwen Outen with the VOA Special English Development Report. New research shows that Earth will hav

SSS 2010-09-01

Theres been an unexpected development in our understanding of drug resistance in bacteria. The accepted scenario was a simple case of evolutionary selection. In a bacterial population exposed to a killer drug, a few lucky individuals might have a gen

SSS 2012-07-02

The same mathematical models used to study the hunting range of lions have many other applicationsthey describe the flight patterns of honeybees. And now researchers say these math models can help explain the stability of gang territories and pattern

中国科学家发现肥胖“秘密”

Chinese scientists discover gut bacteria linked with obesity Obesity could be caused by bacterial infection rather than eating too much, exercising too little or genetics, according to a study that could have profound implications for public health s

2015年CRI ＂Two-child Policy＂ Prompts Calls for Family-friendly Workplace Regulations

The so-called one-child policy was brought into law in the late 1970's as a way to limit population growth, given that the economy at the time was just starting to open up to the outside world, and the domestic resources, particularly in urban areas,

纯正英语一分钟-population

The worlds population is getting bigger and bigger. Theres a population explosion in some countries. Im not sure if this is good or bad. The Earth can only support a limited number of people. One day, the worlds population will be too big to feed eve

2007年VOA标准英语-World Population Moving More Toward Urban Areas

By Robert Raffaele Washington 10 July 2007 This week marks the United Nations' annual observance of World Population Day (Wednesday July 11th) -- focusing attention on issues surrounding population growth worldwide. The annual event comes on the heel

二胎政策需相规管配合

The so-called one-child policy was brought into law in the late 1970's as a way to limit population growth, given that the economy at the time was just starting to open up to the outside world, and the domestic resources, particularly in urban areas,

VOA常速英语2008年-Palestinian Population Grows by 30 Percent in P

By Jim Teeple Jerusalem 11 February 2008 For the first time in a decade there is a new accurate census of Palestinians living in the West Bank, the Gaza Strip and East Jerusalem. VOA's Jim Teeple has details from our Jerusalem Bureau. The new census

【英语时差8，16】细菌能

Ya?l: Welcome to another episode of Lunch with Don and Ya?l. So, Don, what are you eating today? Don: Nothing. Y: Nothing!?! Are you on a diet or something? D: Not by choice. To be honest, I'm trying to save money by buying less food. Y: Why? D: Beca

英语听力文摘 English Digest 231、种群动态进化

Rapid Evolution and Population Dynamics 种群（population）指在一定时间内占据一定空间的同种生物的所有个体。种群中的个体并不是机械地集合在一起，而是彼此可以交配，并通过繁殖将各自的基因传给