The planet Mars has gone through an ice age and is now warming up, scientists say.
科学家表示，火星已经脱离了冰河时代，现在正在升温。
Many scientists now attribute much of the warming of early Earth to oxygen-intolerant microbes—methanogens—that produce the greenhouse gas methane.
现在，许多科学家把早期造成地球变暖的大部分原因归结于厌氧微生物——产甲烷菌——它产生了温室气体甲烷。
Many environmental experts now believe that methane is more responsible for global warming than carbon dioxide.
许多环境专家现在认为，甲烷比二氧化碳对全球变暖负有更大的责任。
We can't switch off global warming just by being good in the future. We have to start being good now.
我们仅通过在未来采取良好措施是不能阻止全球变暖的，我们必须现在就采取行动。
Just as on smoking, voices now come from many quarters insisting that the science about global warming is incomplete, that it's OK to keep pouring fumes into the air until we know for sure.
就像吸烟一样，现在来自许多方面的声音坚持认为，有关全球变暖的科学是不完整的，在我们确定之前，继续向空气中排放烟雾是可以的。
The problems that people see now are just the tip of the iceberg. There are numerous disasters going to happen because of global warming.
人们现在看到的只是问题的冰山一角，由于全球变暖，有很多灾害将会发生。
Such is our dependence on fossil fuels, and such is the volume of carbon dioxide already released into the atmosphere, that many experts agree that significant global warming is now inevitable.
我们对化石燃料的依赖如此之深，已经排放到大气中的二氧化碳又是如此之多，以至于许多专家一致认为，目前情况下全球变暖是不可避免的。
A third sources, the warming-enhanced decay of organic matter in forests and soils, especially in the middle and higher latitudes, is now being recognized as potentially significant.
第三个来源，特别是在中纬度和高纬度地区，森林和土壤中因气候变暖而加剧的有机物腐烂，现在被认为具有潜在的重大意义。
Now, of course, we know that whatever you call it, human behavior is warming the planet, with grave consequences ahead.
当然，如今我们知道，不管怎么说，人类行为正在导致全球变暖，将会带来严重的后果。
The battle against global warming makes sense only if we battle against it now, while alive, without taking one another's life.
只有我们趁现在还活着的时候就对全球变暖宣战，这场战斗才有意义，而无需我们自相残杀。
Now, at this point I have to make the obligatory disclaimer that no individual weather event can be attributed to global warming.
现在，在这一点上我有义务对单独的天气现象不是由全球变暖引起的观点予以否认。
Now, he seemed to be saying that stopping global warming was an urgent matter after all.
现在，他似乎表明，阻止全球变暖是一项紧急的工作。
Nearly half of Americans – 48% – now believe the threat of global warming has been exaggerated, the highest level since polling began 13 years ago, the poll published today by Gallup said.
盖洛普今天发布的一份民意调查显示，现在有近一半美国人——48%——认为全球变暖的威胁完全是夸大其词，这是自13年前开始民意调查以来的最高比例。
We've been told that prices of recycled materials are going through the floor, and now that recycling adds to global warming.
我们常被告之再生材料的价格很低，还说现在垃圾回收使得全球变暖的问题更加严重。
Just as on smoking, voices now come from many quarters insisting that the science about global warming is incomplete, that its ok to keep pouring fumes into the air until we know for sure.
就同吸烟问题一样，来自许多领域的声音坚持认为有关全球变暖的科学研究还不完整，在我们确定此事之前向大气中继续排放废气是没问题的。
Worrying about global warming [that will happen] 100 years from now is a slight luxury to those people.
对于那些人来说，担忧100年之后才会发生的全球变暖着实是有些奢侈的事。
The deal is also further evidence that the once-frosty ties between East Asia's two largest nations are now rapidly warming.
这笔交易进一步证明了，东亚两个最大国家之间曾经冰冷的关系，现在正迅速升温。
The talk now in the climate labs — in the tea rooms and, yes, in their private emails — is of tipping points and runaway warming.
如今在气候实验室——在茶室，在它们的私人邮件中——他们谈论的是有关临界点和失控的气候变暖。
A majority of people now believe - incorrectly - that global warming is not even caused by humans.
这其中大部分人现在转而相信全球变暖并不是由人类活动导致这一错误观点。
We are now faced with a similarly momentous challenge: global warming.
现在我们面临着一个同样重大的挑战——全球气候变暖。
Having agitated about global warming for decades, northerners now find the focus is not on them but on wildlife.
数十年来对全球气候变暖焦虑不安的北方人现在发现焦点问题不是他们自己，而是野生动物。
Now that the weather is warming up, I thought I get some exercise instead of taking the bus all the time.
现在天气暖起来了，我想我也该运动运动，不要天天坐公车了。
The dangers outlined by the CNA report mostly lie in the future, but there are security concerns connected to global warming that threaten us right now.
CNA报告大致列出的危险大多潜伏于未来，但是与全球变暖联系在一起的安全问题已经开始威胁着我们。
Now as a sign of climate warming the canary has died.
作为全球变暖的象征，这只金丝雀已经死去了。
Exxon Mobil, led until recently by a fierce sceptic of global warming, now concedes that there is a problem, and that its products are contributing to it.
过去一直对全球变暖论持强烈怀疑态度的埃克森美孚化工近日终于勉强承认其产品助长了该不良趋势。
I can already hear the howls of execration: now you're claiming that this cooling is the result of warming!
我好像已经听到狂怒的质问：你宣布窗外的寒冷是气候变暖的结果？
I can already hear the howls of execration: now you're claiming that this cooling is the result of warming!
我好像已经听到狂怒的质问：你宣布窗外的寒冷是气候变暖的结果？
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