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第12讲-人类和环境影响Lecture 12 - Human and Environmental Impacts |
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| 课程网址: | http://videolectures.net/yalemcdb150s09_wyman_lec12/ |
| 主讲教师: | Robert Wyman |
| 开课单位: | 耶鲁大学 |
| 开课时间: | 2010-05-14 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Until recently, the world population has been growing faster than exponentially. Although the growth rate has slowed somewhat, there are about 80 million more people each year and about 3 billion more will be added by 2050 (a 50% increase). Population will probably increase more beyond that. Such growth is unprecedented and we cannot predict its long-term effects. The environmental impact of this population increase is bound to be astronomic. Large populations engender two problems: over-consumption in the rich countries which leads to environmental misery, and under-consumption in the poor countries which leads to human misery. People living in abject poverty ($1 per day) don't limit their fertility. Factory jobs in poor countries pay double that, approximately $2 per day. For population to stabilize, income must rise. If population is to increase by 50%, income needs to double -- we are looking at a tripling of the world economy. The environment is currently overstressed. Can it survive a tripling of the economy? |
| 关 键 词: | 人口; 环境; 影响 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2020-11-26：yxd |
| 最后编审: | 2020-11-26：yxd |
| 阅读次数: | 33 |