VOA慢速英语2013 AS IT IS 2013-06-19 Citizen Scientists to Help Map CO2 Gas

 

AS IT IS 2013-06-19 Citizen Scientists to Help Map CO2 Gas

Each red dot on this screen shot from the Ventus website represents a power plant

Welcome to As It Is, the daily magazine show from VOA Learning English.

I’m Mario Ritter.

A music video shot in space? That is now a reality. Today, we hear how Skylab led the way for astronauts living in a weightless environment for long periods.

But first, an American researcher is making an appeal to what he calls citizen scientists. Find out how anyone can help map carbon dioxide released in the atmosphere.

Scientists are seeking more information about gasses that traps heat in the atmosphere. Now, American researchers have launched a project in an effort to better understand how one such gas, carbon dioxide, affects climate change. The project will depend on citizen scientists providing information about all of the world’s power plants. June Simms has the story.

Kevin Gurney is an atmospheric¹ scientist at Arizona State University. He is making a map of the world’s carbon dioxide emissions². Power plants are major producers of those gases. They are believed to cause more than 40 percent of carbon dioxide emissions.

Kevin Gurney says there is good information about emissions in the United States, Canada, India and the European Union. But, he says, estimates for the rest of the world are not complete.

“And if fact, it’s so inaccurate³ that is really insufficient⁴ for the type of science that we’re trying to do.” 

Kevin Gurney’s project is called Ventus, a word that means ‘wind’ in Latin. He has set up a website where people around the world can provide information about power stations.

“We need two pieces of information. We need the amount of electricity generated at a power plant, which if you live near one or you know somebody that works there, that information is pretty readily available.  Most people will know that. We also just need to know the primary fuel. And with those two things we can actually create a better estimate of CO2 emissions than we do right now.” 

The Ventus project database currently lists about 25,000 power plants. Mr. Gurney says there are plants missing from the list. He is asking others to provide the missing information. One of the project’s goals is to create a regularly updated map of carbon dioxide emissions everywhere in the world.

“We will produce the emissions on a map, every hour, every year. We will use that within models of climate change to more accurately⁵ characterize emissions, greenhouse gas concentration and the projections⁶ of those concentrations into the future.” 

The first version of the map will be available on the Ventus website within the next several months. The map will be amended⁷ as new information is received. Kevin Gurney hopes it will help better inform policy makers⁸ and the public. He also expects citizens engaged with the project to become activists⁹ for change. 

The Arizona researcher wants citizen scientists to register on the website. The person who provides the most usable information will be named Supreme¹⁰ Power Plant Emissions Guru. That honor comes with an award and recognition as a co-author on a scientific paper about the project.

I’m June Simms.

Skylab’s Legacy¹¹

For more than 40 years, scientists have sought to learn how well human beings can adapt to long periods in space. The International Space Station continues to provide valuable knowledge about spaceflight. But an earlier space station, Skylab, helped make the current space project possible.  Kelly Jean Kelly has the story.

The music you are hearing came from space -- the International Space Station to be exact.

Canadian astronaut Chris Hadfield's music video has become extremely popular. The astronaut plays his own version of David Bowie's song "Space Oddity.” He performed while floating weightlessly, with images of planet earth and space appearing in the window behind him.

Chris Hadfield recently returned home after nearly five months on the space station. For him, the long flight produced a hit video on YouTube and no major physical problems. But 40 years ago, scientists did not know how humans would react to long-term spaceflight.

To find out, NASA, the American space agency, launched Skylab in May 1973. Over nearly a year, three teams of astronauts visited Skylab for stays of between 28 to 84 days. They learned how people react to extended periods in space.

Gerald Carr commanded Skylab 4. He spoke¹² at a NASA event marking the 40th anniversary of Skylab’s launch. He told VOA that the loss of the body’s muscle mass was a main concern.

"What we learned was that simple exercise takes care of the problem, and there's no reason why a person can't stay in a weightless environment for a long, long time."

Astronauts on Skylab used exercise equipment to stay strong. The astronauts spent their workdays carrying out experiments, including biomedical research. The early space station also served as an observatory¹³ for the sun and the earth.

Owen Garriott was the science pilot of Skylab 3. He is happy with what NASA did with the early space station.

"Forty years out, I think we're still impressed with the amount of work that was accomplished¹⁴ and the foresight¹⁵ of the investigators¹⁶ in planning the experiments."

Marshall Porterfield is the director of NASA's Space Life and Physical Sciences Division. He says the Skylab astronauts' understanding of their own ability to deal with long-term spaceflight continues to help current astronauts.

"Now we've built on that, and what they found in terms of bone and muscle health changes that occur in space, and those are still significant areas in our research portfolio¹⁷ now." 

NASA says the next step for life away from Earth is a year-long space station mission, set for 2015. I’m Kelly Jean Kelly.

Lou Gehrig was born on this date. The baseball great and Yankee player made one of the most memorable¹⁸ speeches in American history when he said farewell to the game he loved.

“I consider myself the luckiest man on the face of the earth. And I might have been given a bad break, but I’ve got an awful lot to live for.”

Thank you for listening today. You can read and download our programs at learningenglish.voanews.com. And join us at the beginning of the hour Universal Time for the latest news.

1 atmospheric   

adj.大气的，空气的；大气层的；大气所引起的

参考例句：

• Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
• Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。

2 emissions   

排放物( emission的名词复数 )； 散发物（尤指气体）

参考例句：

• Most scientists accept that climate change is linked to carbon emissions. 大多数科学家都相信气候变化与排放的含碳气体有关。
• Dangerous emissions radiate from plutonium. 危险的辐射物从钚放散出来。

3 inaccurate   

adj.错误的，不正确的，不准确的

参考例句：

• The book is both inaccurate and exaggerated.这本书不但不准确，而且夸大其词。
• She never knows the right time because her watch is inaccurate.她从来不知道准确的时间因为她的表不准。

4 insufficient   

adj.(for，of)不足的，不够的

参考例句：

• There was insufficient evidence to convict him.没有足够证据给他定罪。
• In their day scientific knowledge was insufficient to settle the matter.在他们的时代，科学知识还不能足以解决这些问题。

5 accurately   

adv.准确地，精确地

参考例句：

• It is hard to hit the ball accurately.准确地击中球很难。
• Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。

6 projections   

预测( projection的名词复数 )； 投影； 投掷； 突起物

参考例句：

• Their sales projections are a total thumbsuck. 他们的销售量预测纯属估计。
• The council has revised its projections of funding requirements upwards. 地方议会调高了对资金需求的预测。

7 Amended   

adj. 修正的 动词amend的过去式和过去分词

参考例句：

• He asked to see the amended version. 他要求看修订本。
• He amended his speech by making some additions and deletions. 他对讲稿作了些增删修改。

8 makers   

n.制造者，制造商（maker的复数形式）

参考例句：

• The makers of the product assured us that there had been no sacrifice of quality. 这一产品的制造商向我们保证说他们没有牺牲质量。
• The makers are about to launch out a new product. 制造商们马上要生产一种新产品。 来自《简明英汉词典》

9 activists   

n.（政治活动的）积极分子，活动家( activist的名词复数 )

参考例句：

• His research work was attacked by animal rights activists . 他的研究受到了动物权益维护者的抨击。
• Party activists with lower middle class pedigrees are numerous. 党的激进分子中有很多出身于中产阶级下层。 来自《简明英汉词典》

10 supreme   

adj.极度的，最重要的；至高的，最高的

参考例句：

• It was the supreme moment in his life.那是他一生中最重要的时刻。
• He handed up the indictment to the supreme court.他把起诉书送交最高法院。

11 legacy   

n.遗产，遗赠；先人(或过去)留下的东西

参考例句：

• They are the most precious cultural legacy our forefathers left.它们是我们祖先留下来的最宝贵的文化遗产。
• He thinks the legacy is a gift from the Gods.他认为这笔遗产是天赐之物。

12 spoke   

n.（车轮的）辐条；轮辐；破坏某人的计划；阻挠某人的行动 v.讲，谈（speak的过去式）；说；演说；从某种观点来说

参考例句：

• They sourced the spoke nuts from our company.他们的轮辐螺帽是从我们公司获得的。
• The spokes of a wheel are the bars that connect the outer ring to the centre.辐条是轮子上连接外圈与中心的条棒。

13 observatory   

n.天文台，气象台，瞭望台，观测台

参考例句：

• Guy's house was close to the observatory.盖伊的房子离天文台很近。
• Officials from Greenwich Observatory have the clock checked twice a day.格林威治天文台的职员们每天对大钟检查两次。

14 accomplished   

adj.有才艺的；有造诣的；达到了的

参考例句：

• Thanks to your help,we accomplished the task ahead of schedule.亏得你们帮忙,我们才提前完成了任务。
• Removal of excess heat is accomplished by means of a radiator.通过散热器完成多余热量的排出。

15 foresight   

n.先见之明，深谋远虑

参考例句：

• The failure is the result of our lack of foresight.这次失败是由于我们缺乏远虑而造成的。
• It required a statesman's foresight and sagacity to make the decision.作出这个决定需要政治家的远见卓识。

16 investigators   

n.调查者，审查者( investigator的名词复数 )

参考例句：

• This memo could be the smoking gun that investigators have been looking for. 这份备忘录可能是调查人员一直在寻找的证据。
• The team consisted of six investigators and two secretaries. 这个团队由六个调查人员和两个秘书组成。 来自《简明英汉词典》

17 portfolio   

n.公事包；文件夹；大臣及部长职位

参考例句：

• He remembered her because she was carrying a large portfolio.他因为她带着一个大公文包而记住了她。
• He resigned his portfolio.他辞去了大臣职务。

18 memorable   

adj.值得回忆的，难忘的，特别的，显著的

参考例句：

• This was indeed the most memorable day of my life.这的确是我一生中最值得怀念的日子。
• The veteran soldier has fought many memorable battles.这个老兵参加过许多难忘的战斗。