They give off a lot of greenhouse gases (especially CO2) into the air. This warms the earth.
它们向空气中释放大量温室气体（尤其是二氧化碳）。这使得地球变暖。
Correction: the article originally misstated that methane, at least 21 times more potent than CO2, is the most potent of greenhouse gases.
更正：本文起初对甲烷的性能掌握有误——其温室效应是二氧化碳的21倍之多，是最强的温室气体。
When it comes to greenhouse gases many of us think first of CO2.
当涉及到温室气体，我们许多人首先想到二氧化碳。
The two gases would be separated, with the CO2 sent to the deep ocean for permanent storage and the methane piped to the surface for use as a renewable heating and cooking fuel.
这两种气体会被分离，二氧化碳会被送到海洋深处永久储藏，而甲烷则会被用管道输送到地表以用作可再生的加热和做饭的燃料。
Although a wide variety of greenhouse gases contribute to human-caused global warming, it is CO2, largely alone, that will determine the long-term climate, Solomon says.
所罗门说，尽管有不少种类的温室气体为人类引起的全球变暖“添砖加瓦”，但决定长期气候的因素，大部分还得看二氧化碳。
Green. Speaking of cars, apart from the CO2 from your breathing, bikes don't release toxic gases.
说到汽车，除了呼吸排放的二氧化碳，自行车不排放有毒气体。
These trends have masked the warming caused by CO2 and other greenhouse gases.
这些趋势掩盖了二氧化碳和其他温室气体的排放所造成的气候变暖这个事实。
One option, ironically, is to use carbon dioxide to replace the synthetic HFC refrigerants used in such systems, he says: such gases can have around 4000 times the global warming potential of CO2.
一种可选的办法，具有讽刺意味，是用二氧化碳替代在这类系统中使用的合成氟化烃制冷剂，他说：这类气体造成全球变暖的可能性是二氧化碳的四千倍。
The standard way to capture CO2 is to use a solvent called monoethanolamine (MEA). Carbon dioxide is absorbed by the solvent, which separates it from the other flue gases.
捕获二氧化碳的标准方法是采用单乙醇胺（MEA）进行吸收，将二氧化碳从烟道气中分离出来。
Carbon capture and storage (CCS) works by trapping CO2 from the exhaust gases of fossil fuel power plants and then piping it to underground storage sites, such as disused oil wells.
而作为对比，如果利用碳捕捉与储存技术（CCS），在碳排放工厂进行碳捕捉然后将二氧化碳深埋在诸如废气油井一类的地方，每固定一吨碳需要成本达20-270美元。
Who would have thought that, globally, the IT industry produces about the same volumes of greenhouse gases as the world's airlines do-rough 2 percent of all CO2 emissions?
全球范围内，信息技术行业与航空业产生的温室气体总量相同——约占二氧化碳排放总量的2%，这有谁曾想到过？
The radiative forcing due to human activity in some areas can be comparable in magnitude with the forcing caused by greenhouse gases, such as CO2 etc.
某些地区人为气溶胶的强迫在量值上可与CO2等温室气体引起的强迫相比拟。
In the second part, in order to remove CO2 thoroughly, the diluent ammonia solution was sprayed from the top of the absorption column, fully mixing with the artificial flue gases from the bottom.
第二部分中，为达到充分脱除CO2的目标，我们将已配好设定浓度的稀氨水从吸收塔顶部喷淋，与塔底上升的人工烟气充分混合。
The analytical method for components of process gases in oxidative dehydrogenation of butene into butadiene was improved by increasing the determinations of volume ratio CO/CO2 and the H2 content.
改进了丁烯氧化脱氢制丁二烯生成气各组分的分析方法，增加了对生成气中CO对CO_2体积含量比率及H_2含量的测定。
This book provides a review, written by expert world forest scientists, of what is known about the impact of elevated CO2 and other greenhouse gases, on forest ecosystems.
这本书提供一篇回顾，以专家世界森林科学家写，在森林生态系统上知道有关举起CO2和其他温室气体的影响的情况什么。
This is potentially a positive feedback mechanism which could increase the impact of greenhouse gases such as CO2. The research is published in the journal Geophysical Research Letters.
这有可能成为正面回馈机制，使得二氧化碳等温室效应气体的影响力加大。此研究发表于《地球物理研究通讯》期刊上。
CO2 makes up about 70% of the greenhouse gases, which is considered to be one of the greatest causes of global warming.
二氧化碳占大约70%的温室气体，这已经可以认定为导致全球变暖的最主要的原因之一。
They hope to cut emissions of greenhouse gases, like CO2, which lead the planet to warm up.
各国希望减少排放导致全球变暖的温室气体，如二氧化碳。
In addition, a lot of CO2 and other greenhouse gases were released into the atmosphere since the burning of fossil, which is leading to the growing global climate warming.
另外，由于矿物燃料的燃烧，人类向大气中排放了大量的二氧化碳(CO2)等多种温室气体，使得全球气候日益变暖。
The greenhouse gases include methane emissions and CO2, etc.
温室效应气体包括了甲烷排放物及二氧化碳等。
Thee greenhouse gases include methane emissions and CO2, etc.
温室效应气体包括了甲烷排放物及二氧化碳等。 。
Who would have thought that, globally, the IT industry produces about the same volume of greenhouse gases as the world's airlines do-roughly 2 percent of all CO2 emissions?
有谁会想到，在全球范围内，IT行业产生的温室气体跟全球航空公司产生的一样多？占二氧化碳总排量的2%。
Forest soil is the important source and sink of greenhouse gas in atmosphere. The main greenhouse effect gases, such as CO2, CH4 and N2O, are related to this system directly or indirectly.
森林土壤是大气温室气体重要的源和汇，主要的温室效应气体CO2、CH4及N2O都直接或间接与这个系统有关。
Through burning coal, oil and gas, people have been increasing the greenhouse gases in the atmosphere, such as CO2.
通过燃烧煤、石油和天然气，人们增加了大气中的“温室”气体，例如二氧化碳。
CO2 emitted from coal combustion is the bases of greenhouse gases.
煤燃烧产生的二氧化碳是温室气体的主要成分。
CO2 emitted from coal combustion is the bases of greenhouse gases.
煤燃烧产生的二氧化碳是温室气体的主要成分。
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