WEBVTT 00:00:03.399 --> 00:00:10.800 A common misunderstanding is that if we save all the poor children, the world will become overpopulated. 00:00:10.800 --> 00:00:13.599 This may sound logical, but it's wrong. 00:00:13.599 --> 00:00:16.199 It's the other way around! 00:00:16.199 --> 00:00:22.000 Saving the poor children's lives is required to end population growth. 00:00:22.000 --> 00:00:24.699 Now! Look at the UN numbers. 00:00:24.699 --> 00:00:30.199 Poor parents on average have five children. And one dies. 00:00:30.199 --> 00:00:36.100 Look! Two parents are replaced by four surviving children in the next generation. 00:00:36.100 --> 00:00:39.600 This means population is growing very fast among the poorest. 00:00:39.600 --> 00:00:46.200 This is the average family in the worst off places like Congo and Afghanistan. 00:00:46.200 --> 00:00:55.399 Today, where child mortality is highest, that's where population is growing faster than anywhere else. 00:00:55.399 --> 00:00:57.700 How many people live like this? 00:00:57.700 --> 00:01:03.899 There are seven billion people in the world. One block: one billion. 00:01:03.899 --> 00:01:07.400 The poorest two billion... 00:01:07.400 --> 00:01:08.799 ...they live like this. 00:01:08.799 --> 00:01:11.500 The other five billion... 00:01:13.799 --> 00:01:20.900 ...they have this average family. Two parents having two children and there are few child deaths. 00:01:20.900 --> 00:01:25.000 This is the majority of the world population, not only Europe and the US. 00:01:25.000 --> 00:01:32.293 It's throughout religions and cultures: China, Iran, Mexico, large cities in Africa. 00:01:32.293 --> 00:01:38.199 Today in most populations children just replace parents. 00:01:38.199 --> 00:01:42.099 And the size of generations are no longer increasing. 00:01:42.099 --> 00:01:46.700 This means the population will stop growing. 00:01:46.700 --> 00:01:51.500 How did so many people end up with small families? 00:01:51.500 --> 00:01:54.700 Well, their children stopped dying. 00:01:54.700 --> 00:02:00.500 As they left extreme poverty and girls got education, parents no longer had to 00:02:00.500 --> 00:02:06.500 compensate for child death by having many babies. And a large family stopped being 00:02:06.500 --> 00:02:09.199 an economic necessity or a social status symbol. 00:02:09.199 --> 00:02:15.000 And with modern contraceptives, parents across the world, the majority, 00:02:15.000 --> 00:02:18.000 decided to have a small family. 00:02:18.000 --> 00:02:26.000 So, by saving the lives of poor children and helping the last two billion out of poverty, 00:02:26.000 --> 00:02:33.199 these parents will also decide to have fewer children. 00:02:33.199 --> 00:02:37.199 And fewer. 00:02:37.199 --> 00:02:39.099 Eventually... 00:02:39.099 --> 00:02:43.000 ...reaching the two child family. 00:02:43.000 --> 00:02:48.400 That showed the UN family size forecast up to the end of the century. 00:02:48.400 --> 00:02:52.900 Then the world population is expected to stop growing. 00:02:52.900 --> 00:03:01.599 Before it stops, another four billion people will be added to the world population. 00:03:01.599 --> 00:03:06.400 Four billion more. That's a lot of people! 00:03:06.400 --> 00:03:15.300 But the longer poor children keeps dying and this change is delayed, 00:03:15.300 --> 00:03:20.699 the more billions will be added. 00:03:20.699 --> 00:03:28.099 So ending population growth starts by saving the poorest children.