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chronically³¤Æڵģ¬ÂýÐÔµÄ[23] I want to tell you about the past, present and future of the human population, so let¡¯s start with a few problems. Right now, a billion people are chronically hungry. That means they wake up hungry, they are hungry all day and they go to sleep hungry. A billion people are living in slums, not the same billion people, but there is some overlap. Living in slums means they don¡¯t have infrastructure to take the garbage away. They don¡¯t have secure water supplies to drink. Nearly a billion people are illiterate. Try to imagine your life being illiterate. You can¡¯t read the labels on the bottles in the supermarket, if you can get to a supermarket. Two-thirds of those people who are illiterate are women. And about 200 to 250 million women don¡¯t have access to birth control they want, so that they can¡¯t control their own fertility. This is not only a problem in developing countries. [24] About half of all pregnancies globally are unintended. So those are examples of population problems.
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