But climate policies carry an even larger cost in the developing world, where three billion people lack access to cheap and plentiful energy, perpetuating their poverty. They cook and keep warm by burning twigs and dung, producing indoor air pollution that causes 3.5 million deaths per year – by far the world’s biggest environmental problem.
但气候政策令发展中国家付出更大的代价，那里的30亿民众无法得到充足的廉价能源，于是永远无法摆脱贫困状况。他们靠燃烧树枝和牛粪来做饭取暖，由此造成的室内空气污染每年导致350万人死亡——这才是世界范围内最迫在眉睫的环境问题。