到2070年，世界上1/3的人口将会笼罩在撒哈拉般的热浪中_BEC初级作文

到2070年，世界上1/3的人口将会笼罩在撒哈拉般的热浪中

该研究使用了RCP8.5，即碳排放达到极端水平的情景，来模拟本世纪末人类气候生态位的状况。结果表明，它将大幅缩小。撒哈拉沙漠是地球上仅有的年平均气温超过29摄氏度（84华氏度）的地方之一，也是人类气候生态位基本结束的地方。拥有如此高热量的地区仅占世界陆地面积的0.8%。但到2070年，这种类型的高温将在地球近20%的土地上变得司空见惯。这么大的地区是多达30亿人的家园，如果他们不迁移，将会生活在人类永远无法忍受的环境中。

What’s more, this spike in temperature over the intervening 50 years will be more dramatic than anything experienced in at least 6,000 years. You know, the period where human civilization really hit its groove.

更重要的是，这50年间的温度峰值将比至少6000年来的任何一次都要剧烈。你要知道，这段时间也是人类文明真正达到巅峰的时期。

The results are truly shocking in map form. Nearly all of Brazil will become essentially uninhabitable, as will huge chunks of the Middle East and India, showing the poorest areas will be hit the hardest. But the impacts aren’t limited to developing countries; the U.S. South, parts of Australia, and Mediterranean Europe will also see temperatures beyond the niche. The flip, though, that North America and Europe will also make habitability gains. When scientists found last year that we were all going to want to move to Siberia by the end of the century, they weren’t kidding.