Zero net emissions by 2050 ?

2050年达到净排放为零？

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Net emissions of CO2 were provisionally estimated to be 480.9 million tonnes, 9.8% lower than 2008's 532.8 million tonnes.

二氧化碳净排放量初步估计是4.809亿，比2008年的5.328亿下降了9.8%。

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An economist welcomes such methods as a way of achieving a stated goal (fewer net emissions) at lowest cost.

ECONOMIST: Economics focus

In theory biofuels produce low net emissions of carbon dioxide, since burning them merely recycles atmospheric carbon absorbed by the plant as it was growing.

ECONOMIST: Worries over biofuels could work to Britain's advantage

Some Latin American countries are already doing things to reduce net carbon emissions that put them ahead of governments elsewhere.

ECONOMIST: More reasons to stop deforestation