Of course, solar activity is just one natural source of climate variability. Volcanic eruptions are another, spewing gas and dust into the atmosphere.

当然，太阳活动仅仅是气候变化的一个自然因素，火山喷发出气体和尘埃进入大气层也会带来这个结果。

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In other words, there is only room in the atmosphere to burn or vent less than one quarter of known oil, natural gas and coal reserves.

换句话说，大气目前的承受量，仅能允许我们燃烧或排放已知储量四分之一的石油、天然气和煤。

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Siluria Technologies, is pursuing an alternative method of converting natural gas to an oil substitute that would also involve releasing less carbon dioxide into the atmosphere.

一家开始运转的旧金山公司锡卢里亚技术公司正在寻求一种把天然气转化为石油替代品的方法，这将减少二氧化碳的排放量。

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Chesapeake has said in a statement that there were no injuries from the blowout and that no natural gas was released to the atmosphere.

FORBES: Chesapeake Energy Suffers Gas Well Blowout On Anniversary Of BP Spill

There is considerable worry by many observers of the gas industry that federal figures of overall greenhouse-gas-emissions reductions may be misleading because they fail to account for the impact of natural gas that leaks into the atmosphere from drilling and pipelines.

WSJ: Rise in U.S. Gas Production Fuels Unexpected Plunge in Emissions

Also, burning wood releases three times more carbon into the atmosphere than burning natural gas, per unit energy generated, said Booth.

FORBES: Massachusetts Addresses "Biomass Loophole" and Limits Subsidies