When economists think about climate change, some think a lot about horse manure. Specifically, they consider the greatmanure crisis of the late 1800s, when the world’s cities relied on horses for transport to such an extent that a public sanitation disaster loomed. Fine minds set to work on a crisis that The Times of London estimated in 1894 was so dire that in 50 years every street in the city would be buried 9ft deep in horse droppings.
当manbetx20客户端下载 学家思考气候变化问题时，其中一些人会重点研究马粪。具体来说，他们研究的是19世纪末的马粪大危机。当时世界各地的城市极度依赖马匹作为交通工具，以至于一场公共卫生灾难迅速逼近。1894年，伦敦《泰晤士报》(The Times)估计，50年后这场危机会变得非常可怕，伦敦的每一条街道都将覆盖9英尺厚的马粪，于是一群聪明人开始着手应对这场危机。
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