With prices for carbon low, so was the incentive to reduce emissions.

在碳价格处于低位情况下，这样做是为了鼓励减少排放。

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The 1997 Kyoto Protocol was an early attempt at such a system, with the aim of having developed nations reduce their carbon emissions an average of 5% below 1990 levels by 2012.

早在1997年，《京都议定书》就试图建立一个类似的体系，其目标是到2012年，发达国家的二氧化碳排放量与1990年相比将减少5%。

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The problem with trying to reduce carbon emissions, they argue, is that the incentives are all wrong.

作者认为试图减少碳排放量的问题从动机起就是完全错误的。

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El Hierro biosphere reserves aims to increase energy efficiency and reduce carbon emissions further with a Sustainable Mobility Plan (PDMS), since 50% of the energy consumed on the island is used for transportation.

UNESCO: MEDIA SERVICES

Third, the report says that increasing the use of natural gas and renewables could reduce carbon dioxide emissions by almost 25 percent with the same economic benefits.

CNN: Developing countries encouraged to curb greenhouse gases

And as we move forward over the next several years, my hope is, is that the United States, as one of several countries with a big carbon footprint, can find further ways to reduce our carbon emissions.

WHITEHOUSE: President Obama��s News Conference with Prime Minister Gillard of Australia | The White House