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  3. Climate change is the greatest challenge facing humanity: drastic reduction of carbon emissions is vital if we are to avoid a ca

Climate change is the greatest challenge facing humanity: drastic reduction of carbon emissions is vital if we are to avoid a ca

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问题     Climate change is the greatest challenge facing humanity: drastic reduction of carbon emissions is vital if we are to avoid a catastrophe that devastates large parts of the world. Governments and businesses have been slow to act and individuals now need to take the lead.
    The Earth can absorb no more than 3 tons of carbon dioxide emissions each year for every person on the planet if we are to keep temperature and rainfall change within tolerable limits. Yet from cars and holiday flights to household appliances and the food on our plates, Western consumer lifestyles leave each of us responsible for over 12 tones of carbon dioxide a year—four times what the Earth can handle.
    Individual action is essential if we want to avoid climate chaos. How to Live a Low-Carbon Life shows how easy it is to take responsibility, providing the first comprehensive, one-stop reference guide to calculating your CO2emissions and reducing them to a sustainable 3 tons a year.
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答案 气候变化是人类面临的最大挑战：如果我们想要避免一场可以摧毁世界上大部分地区的灾难，大幅减少碳排放量至关重要。政府和企业迟迟没有采取行动，因此，现在需要个人起带头作用了。 如果我们想要使气温和降雨量的变化维持在可忍受的限度之内，地球至多只能吸收每人每年3吨的二氧化碳排放。但是，从汽车、度假航班，到家用电器和我们盘中的食物，西方的消费生活方式使我们每人每年产生超过12吨的二氧化碳——四倍于地球的处理能力。 如果我们想要避免气候混乱，个人的行动是必不可少的。《如何过一种低碳生活》告诉我们减少二氧化碳排放是多么的容易，它提供了第一个全面的、一站式的参考指南，指导我们如何计算CO2排放量以及如何将CO2排放量减少到每年3吨这样一个可承受的限度。
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