The global population has reached 8 billion, what does this mean for the future of our world?

Dr. Rachel Snow of the United Nations Population Fund is here to answer your questions.

对于当今的人口政策，关键在于人，而不是数字，在于个人和夫妻自由决定是否生殖、何时生殖和每隔多少时间生殖的权利。但人口政策并非一直如此。