Most scientists believe that a rise in the Earth's temperatures is worsened by the effect of greenhouse gases.

大多数科学家相信温室气体效应使地球温度上升情况恶化。

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Methane, the primary component of natural gas and among the more potent greenhouse gases, has far more of an effect on climate change than carbon dioxide.

甲烷是天然气的主要成分，也是温室效应相对比较高的气体之一，它对气候变化的影响远比二氧化碳强得多。

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Only an increased greenhouse effect caused by higher amounts of heat-trapping gases in the atmosphere can explain it.

唯一合理的解释是，越来越多吸收热量的气体逐渐积累带来愈加严重的温室效应。

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These reflect sunlight away from Earth and thus oppose the effect of greenhouse gases.

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For we do know very well what is the direct effect of a doubling of greenhouse gases.

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Most of it is, of course, radiated back into space. (It is the partial blocking of this radiation by gases such as carbon dioxide that causes the much-talked-of greenhouse effect.) Some of it, however, goes in the opposite direction, into the ground.

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