Even if this program didn't reduce poverty, Ferraro says, "the value of the avoided deforestation just for carbon dioxide emissions alone is more than the program costs."

即使这个项目没有减轻贫困，费拉罗也表示：“仅从二氧化碳排放的角度来看，由此避免的森林砍伐的价值就已经超过了项目的成本。”

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If Dr Jiao is right, a whole new "sink" for carbon dioxide from the atmosphere has been discovered.

如果焦博士没错的话，又一个存放大气中所含二氧化碳的“缸”被发现了。

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Oppenheimer feels more urgency than ever to deal with climate change, but he says that in the end, setting acceptable limits for carbon dioxide is a judgment call.

奥本海默感到应对气候变化比以往任何时候都更加紧迫，但他说，制定可接受的二氧化碳水平最终是一种主观判断。

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They observed that for every molecule of carbon dioxide taken in by the plants, they lost forty-four percent less water.

VOA: special.2010.01.26

Plants naturally take in carbon dioxide they need for photosynthesis, the process of changing light energy to chemical energy.

VOA: special.2010.01.26

Greenhouse gas emissions, such as carbon dioxide, are created in part by burning oil and coal for transportation and electricity.

VOA: special.2009.12.26

Obama's big initiative will be some sort of cap-and-trade scheme for carbon dioxide emissions.

FORBES: Magazine Article

Back then, it took 7, 000 years for carbon dioxide to reach 80 ppm, Tans said.

NPR: Experts: CO2 Record Illustrates 'Scary' Trend

In fact, he says, no one has come up with similar gismos for carbon dioxide.

NPR: Has the Move to Make Cars Greener Stalled?