2014年经济学人 气候变化与地质工程学 地球发光令人担心

Climate change and geoengineering

Fears of a bright planet

Experiments designed to learn more about ways of geoengineering the climate should be allowed to proceed

SHINY things absorb less heat when left in the sun. This means that if the Earth could be made a little shinier it would be less susceptible¹ to global warming. Ways to brighten it, such as adding nanoscale specks² of salt to low clouds, making them whiter, or putting a thin haze³ of particles into the stratosphere, are the province of “geoengineering”. The small band of scientists which have been studying this subject over the past decade or so have mostly been using computer models. Some of them are now proposing outdoor experiments—using seawater-fed sprayers to churn out particles of the exact size needed to brighten clouds, or spewing sulphur particles from underneath⁴ a large balloon 20km up in the sky.

The aims are modest. The scientists hope to understand some of the processes on which these technologies depend, as a way of both gauging⁵ their feasibility (can you reliably make tiny puffs⁶ of sea salt brighten clouds?) and assessing their risks (how much damage to the ozone⁷ layer might a stratospheric haze do, and how might such damage be minimized?). The experiments would be far too small to have any climatic effects. The amount of sulphur put into the stratosphere by the experimental balloon would be 2% of what a passenger jet crossing the Atlantic emits in an hour.

Nonetheless, these experiments—and this whole line of research—are hugely controversial. Many scientists are skeptical⁸ about geoengineering and most greens are outraged⁹. Opponents object to them for a range of reasons. Some are against the very idea of geoengineering and any experiments in the area, even those which pose no immediate¹⁰ risk to the environment. They abhor¹¹ the hubris¹² involved in trying to affect the mechanics of the climate and despair at the potential diversion of attention from controlling carbon emissions¹³ as the route to countering climate change. They find the idea of some–possibly many—countries having the power to change the climate for the whole planet a geopolitical nightmare. Even modest experiments in geoengineering, according to this logic¹⁴, are the beginnings of a slippery slope, one that will engender¹⁵ a false sense of security and domesticate¹⁶ an idea that should have always remained outrageous¹⁷.

Yet caving in to this opposition¹⁸ would raise, rather than reduce, the dangers to the planet. Geoengineering is not an alternative to mitigating¹⁹ climate change by cutting carbon emissions, but it may be needed as a complement²⁰ to it. Although pressure for cuts in carbon emissions through negotiations²¹ such as those currently taking place in Lima is yielding results—witness the recent agreement by China and America on new reduction targets—it has so far been insufficient²² to the task, and emissions look set to rise for decades yet.

Even if emissions do eventually start to fall, the cuts will take decades to have any effect so temperatures are likely to go on going up for some time. Although they have not soared in the past couple of decades as they did in the 1980s and 1990s, there is a fair chance that this year will tie with the hottest on record. The planet is not getting cooler and the pressures on the climate are unlikely to go away. It is therefore not too hard to imagine a world, decades hence, in which emissions are falling but temperatures are rising steeply and the ability to adapt to them has been stretched too far. An additional way to stabilize²³ temperatures might then seem in order. Geoengineering offers that possibility.

Knowledge can be dangerous; ignorance can be worse

Research on a question of such gravity will have implications beyond its scientific results. But that is a reason to hold the scientists to high standards, not to duck the experiment entirely²⁴. If the research consists of safe, well-conceived experiments designed to improve scientific understanding of the processes involved; if it is conducted by people who openly discuss with the public the implications of their research; if it is funded by bodies that take the need for transparency and debate about the risks inherent in such research seriously: then it deserves to be approved.

There are all sorts of reasons why geoengineering may prove impossible, either politically or scientifically. It may be too dangerous to countenance²⁵, and the circumstances which might make it an appealing complement to cutting emissions may never arise. But to treat research into the subject as taboo²⁶ on the basis that ignorance is a viable²⁷ defense²⁸ against folly²⁹ would be a dangerous mistake.

1 susceptible   

adj.过敏的，敏感的；易动感情的，易受感动的

参考例句：

• Children are more susceptible than adults.孩子比成人易受感动。
• We are all susceptible to advertising.我们都易受广告的影响。

2 specks   

n.眼镜；斑点，微粒，污点( speck的名词复数 )

参考例句：

• Minutes later Brown spotted two specks in the ocean. 几分钟后布朗发现海洋中有两个小点。 来自英汉非文学 - 百科语料821
• Do you ever seem to see specks in front of your eyes? 你眼睛前面曾似乎看见过小点吗？ 来自辞典例句

3 haze   

n.霾，烟雾；懵懂，迷糊；vi.(over)变模糊

参考例句：

• I couldn't see her through the haze of smoke.在烟雾弥漫中，我看不见她。
• He often lives in a haze of whisky.他常常是在威士忌的懵懂醉意中度过的。

4 underneath   

adj.在...下面，在...底下；adv.在下面

参考例句：

• Working underneath the car is always a messy job.在汽车底下工作是件脏活。
• She wore a coat with a dress underneath.她穿着一件大衣，里面套着一条连衣裙。

5 gauging   

n.测量[试]，测定，计量v.（用仪器）测量( gauge的现在分词 )；估计；计量；划分

参考例句：

• The method is especially attractive for gauging natural streams. 该方法对于测量天然的流注具有特殊的吸引力。 来自辞典例句
• Incommunicative as he was, some time elapsed before I had an opportunity of gauging his mind. 由于他不爱说话，我过了一些时候才有机会探测他的心灵。 来自辞典例句

6 puffs   

n.吸( puff的名词复数 )；（烟斗或香烟的）一吸；一缕（烟、蒸汽等）；（呼吸或风的）呼v.使喷出( puff的第三人称单数 )；喷着汽（或烟）移动；吹嘘；吹捧

参考例句：

• We sat exchanging puffs from that wild pipe of his. 我们坐在那里，轮番抽着他那支野里野气的烟斗。 来自辞典例句
• Puffs of steam and smoke came from the engine. 一股股蒸汽和烟雾从那火车头里冒出来。 来自辞典例句

7 ozone   

n.臭氧，新鲜空气

参考例句：

• The ozone layer is a protective layer around the planet Earth.臭氧层是地球的保护层。
• The capacity of ozone can adjust according of requirement.臭氧的产量可根据需要或调节。

8 skeptical   

adj.怀疑的，多疑的

参考例句：

• Others here are more skeptical about the chances for justice being done.这里的其他人更为怀疑正义能否得到伸张。
• Her look was skeptical and resigned.她的表情是将信将疑而又无可奈何。

9 outraged   

a.震惊的，义愤填膺的

参考例句：

• Members of Parliament were outraged by the news of the assassination. 议会议员们被这暗杀的消息激怒了。
• He was outraged by their behavior. 他们的行为使他感到愤慨。

10 immediate   

adj.立即的；直接的，最接近的；紧靠的

参考例句：

• His immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
• We declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。

11 abhor   

v.憎恶；痛恨

参考例句：

• They abhor all forms of racial discrimination.他们憎恶任何形式的种族歧视。
• They abhor all the nations who have different ideology and regime.他们仇视所有意识形态和制度与他们不同的国家。

12 hubris   

n.傲慢，骄傲

参考例句：

• There is no safety in unlimited technological hubris.在技术方面自以为是会很危险。
• The very hubris of French claims alarmed the other powers.法国贪婪的胃口使其他大国惊恐不安。

13 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。

14 logic   

n.逻辑(学)；逻辑性

参考例句：

• What sort of logic is that?这是什么逻辑？
• I don't follow the logic of your argument.我不明白你的论点逻辑性何在。

15 engender   

v.产生，引起

参考例句：

• A policy like that tends to engender a sense of acceptance,and the research literature suggests this leads to greater innovation.一个能够使员工产生认同感的政策，研究表明这会走向更伟大的创新。
• The sense of injustice they engender is a threat to economic and political security.它们造成的不公平感是对经济和政治安全的威胁。

16 domesticate   

vt.驯养；使归化，使专注于家务

参考例句：

• Many thousand years ago people learned how to domesticate animals.数千年以前人们就学会了饲养动物。
• If you domesticate this raccoon,it will have trouble living in the wild.如果你驯养这只浣熊，它生活在野外将会有困难。

17 outrageous   

adj.无理的，令人不能容忍的

参考例句：

• Her outrageous behaviour at the party offended everyone.她在聚会上的无礼行为触怒了每一个人。
• Charges for local telephone calls are particularly outrageous.本地电话资费贵得出奇。

18 opposition   

n.反对，敌对

参考例句：

• The party leader is facing opposition in his own backyard.该党领袖在自己的党內遇到了反对。
• The police tried to break down the prisoner's opposition.警察设法制住了那个囚犯的反抗。

19 mitigating   

v.减轻，缓和( mitigate的现在分词 )

参考例句：

• Are there any mitigating circumstances in this case ? 本案中是否有任何情况可以减轻被告的罪行？ 来自辞典例句
• A sentencing judge is required to consider any mitigating circumstances befor imposing the death penalty. 在处死刑之前，要求量刑法官必须考虑是否有任何减轻罪行之情节。 来自口语例句

20 complement   

n.补足物，船上的定员；补语；vt.补充，补足

参考例句：

• The two suggestions complement each other.这两条建议相互补充。
• They oppose each other also complement each other.它们相辅相成。

21 negotiations   

协商( negotiation的名词复数 )； 谈判； 完成（难事）； 通过

参考例句：

• negotiations for a durable peace 为持久和平而进行的谈判
• Negotiations have failed to establish any middle ground. 谈判未能达成任何妥协。

22 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。

23 stabilize   

vt.（使）稳定，使稳固，使稳定平衡；vi.稳定

参考例句：

• They are eager to stabilize currencies.他们急于稳定货币。
• His blood pressure tended to stabilize.他的血压趋向稳定。

24 entirely   

ad.全部地，完整地；完全地，彻底地

参考例句：

• The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
• His life was entirely given up to the educational work. 他的一生统统献给了教育工作。

25 countenance   

n.脸色，面容；面部表情；vt.支持，赞同

参考例句：

• At the sight of this photograph he changed his countenance.他一看见这张照片脸色就变了。
• I made a fierce countenance as if I would eat him alive.我脸色恶狠狠地，仿佛要把他活生生地吞下去。

26 taboo   

n.禁忌，禁止接近，禁止使用；adj.禁忌的；v.禁忌，禁制，禁止

参考例句：

• The rude words are taboo in ordinary conversation.这些粗野的字眼在日常谈话中是禁忌的。
• Is there a taboo against sex before marriage in your society?在你们的社会里，婚前的性行为犯禁吗？

27 viable   

adj.可行的，切实可行的，能活下去的

参考例句：

• The scheme is economically viable.这个计划从经济效益来看是可行的。
• The economy of the country is not viable.这个国家经济是难以维持的。

28 defense   

n.防御，保卫；[pl.]防务工事；辩护，答辩

参考例句：

• The accused has the right to defense.被告人有权获得辩护。
• The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。

29 folly   

n.愚笨，愚蠢，蠢事，蠢行，傻话

参考例句：

• Learn wisdom by the folly of others.从别人的愚蠢行动中学到智慧。
• Events proved the folly of such calculations.事情的进展证明了这种估计是愚蠢的。